{"product_id":"cw049-black-diamond-cory-catfish-hoplisoma-sp-cw049","title":"CW049 Black Diamond Cory Catfish – Hoplisoma sp. CW049","description":"\u003cdiv class=\"tropicflow-product-description\" style=\"max-width: 920px; margin: 0 auto; font-size: 16px; line-height: 1.7; color: #333;\"\u003e\n\n  \u003c!-- QUICK ANSWER --\u003e\n  \u003cdiv style=\"background: #f5faf8; border-left: 4px solid #016141; padding: 18px 20px; margin: 0 0 28px 0; border-radius: 4px;\"\u003e\n    \u003cstrong style=\"color: #016141; font-size: 18px;\"\u003eQuick Answer:\u003c\/strong\u003e\n    \u003cp style=\"margin: 8px 0 0 0;\"\u003e\n      The \u003cstrong\u003eCW049 Black Diamond Cory Catfish (Hoplisoma sp. CW049)\u003c\/strong\u003e\n      is a striking, still-undescribed collector Cory known for its\n      \u003cstrong\u003epale cream-to-tan body, bold black eye mask, and distinctive\n      diamond-shaped black marking extending from the dorsal-fin region down the side of the body\u003c\/strong\u003e.\n      Native to the \u003cstrong\u003eColombia–Brazil border region\u003c\/strong\u003e, CW049 is closely\n      associated with tributaries of the Rio Içá\/Putumayo system and is often\n      compared with the similar CW051 New Panda Cory. Adults generally reach\n      approximately \u003cstrong\u003e2–2.5 inches\u003c\/strong\u003e and should be kept in groups\n      of at least \u003cstrong\u003e6 fish\u003c\/strong\u003e over fine sand in a mature aquarium\n      with clean, soft-to-moderately soft, well-oxygenated water.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- INTRO --\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCW049 Black Diamond Cory Catfish (Hoplisoma sp. CW049)\u003c\/strong\u003e\n    is one of the most visually distinctive black-and-white Cory-type catfish\n    available to specialty freshwater aquarists.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Also known as the \u003cstrong\u003eBlack Diamond Cory\u003c\/strong\u003e,\n    \u003cstrong\u003eDiamond Cory\u003c\/strong\u003e, \u003cstrong\u003eCW049 Cory\u003c\/strong\u003e, or\n    \u003cstrong\u003eNew Panda CW049\u003c\/strong\u003e, this fish combines a light-colored body\n    with sharply defined black markings that create a dramatic high-contrast appearance.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The signature marking is a large\n    \u003cstrong\u003eblack diamond or wedge-shaped patch\u003c\/strong\u003e extending downward\n    from the dorsal-fin region. A separate dark band passes through the eye,\n    giving the fish a masked appearance.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    CW049 first became widely known in the aquarium hobby after exports from\n    Colombia began around 2010. It entered the hobby at approximately the same\n    time as the very similar CW051, leading to early uncertainty over whether\n    the two represented different species or simply different patterns.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eTaxonomy note:\u003c\/strong\u003e CW049 has not yet received a formal\n    scientific species description. Historically it was called\n    \u003cem\u003eCorydoras sp. CW049\u003c\/em\u003e. Following the 2024 revision of Corydoradinae,\n    this short-snouted lineage is now placed in the resurrected genus\n    \u003cstrong\u003e\u003cem\u003eHoplisoma\u003c\/em\u003e\u003c\/strong\u003e, making\n    \u003cstrong\u003e\u003cem\u003eHoplisoma sp. CW049\u003c\/em\u003e\u003c\/strong\u003e the appropriate modern designation.\n  \u003c\/p\u003e\n\n  \u003c!-- INFORMATION TABLE --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory Catfish Care Information\n  \u003c\/h2\u003e\n\n  \u003cdiv style=\"overflow-x: auto; margin: 18px 0 30px 0;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 520px;\"\u003e\n      \u003ctbody\u003e\n\n        \u003ctr\u003e\n          \u003cth style=\"background: #016141; color: #fff; text-align: left; padding: 12px 14px; border: 1px solid #ddd; width: 38%;\"\u003e\n            Care Requirement\n          \u003c\/th\u003e\n          \u003cth style=\"background: #016141; color: #fff; text-align: left; padding: 12px 14px; border: 1px solid #ddd;\"\u003e\n            CW049 Black Diamond Cory Information\n          \u003c\/th\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCommon Name\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Black Diamond Cory, Diamond Cory, CW049 Cory\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eScientific \/ Hobby Name\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            \u003cem\u003eHoplisoma sp. CW049\u003c\/em\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFormer Hobby Name\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            \u003cem\u003eCorydoras sp. CW049\u003c\/em\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCW Number\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            CW049 \/ CW49\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSpecies Status\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Undescribed Collector Species\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eAdult Size\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Approximately 2–2.5 inches\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            73–79°F (23–26°C)\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            5.5–7.2\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWater Preference\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Soft to Moderately Soft; Clean, Stable Water\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRecommended Tank Size\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            20–30+ Gallons Recommended\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRecommended Group Size\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            6+ Minimum; 8+ Preferred\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTemperament\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Peaceful \u0026amp; Social\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDiet\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Omnivore \/ Benthic Forager\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTank Level\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Bottom Dweller\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCare Level\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Intermediate\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr style=\"background: #f8f8f8;\"\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 11px 14px; border: 1px solid #ddd;\"\u003e\n            Colombia–Brazil Border Region; Tributary of the Rio Içá \/ Putumayo System\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- APPEARANCE --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    What Does a CW049 Black Diamond Cory Look Like?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    The \u003cstrong\u003eCW049 Black Diamond Cory\u003c\/strong\u003e has a compact,\n    short-snouted \u003cem\u003eHoplisoma\u003c\/em\u003e body with a pale\n    \u003cstrong\u003ecream, ivory, light tan, flesh-toned, or pale golden body\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    A bold \u003cstrong\u003eblack vertical band passes through the eye\u003c\/strong\u003e,\n    covering much of the height of the head and creating a strongly masked appearance.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The most recognizable feature is the large\n    \u003cstrong\u003eblack diamond-shaped marking centered around the dorsal-fin region\u003c\/strong\u003e.\n    The dark patch extends from the dorsal fin downward into the side of the body\n    and narrows toward its lower point.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The sharp contrast between the pale body and solid black markings\n    gives CW049 its characteristic \u003cstrong\u003eBlack Diamond\u003c\/strong\u003e appearance.\n  \u003c\/p\u003e\n\n  \u003c!-- WHY BLACK DIAMOND --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Why Is CW049 Called the Black Diamond Cory?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    The name \u003cstrong\u003eBlack Diamond Cory\u003c\/strong\u003e refers to the large,\n    sharply defined black marking below and around the dorsal fin.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    In well-marked specimens, this central patch forms a\n    \u003cstrong\u003ediamond, wedge, or inverted triangular shape\u003c\/strong\u003e\n    against the pale background of the body.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    This black diamond is the defining visual feature of CW049 and one\n    of the easiest ways to distinguish it from the related-looking CW051.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background: #f5faf8; border-left: 4px solid #016141; padding: 18px 20px; margin: 26px 0;\"\u003e\n    \u003cstrong style=\"color: #016141;\"\u003eBlack Diamond Feature:\u003c\/strong\u003e\n    \u003cp style=\"margin: 7px 0 0 0;\"\u003e\n      Look for a \u003cstrong\u003epale body, solid black eye mask, and a sharply defined\n      diamond-shaped black marking descending from the dorsal-fin region\u003c\/strong\u003e.\n      This central marking is typically narrower than the broad saddle found\n      on CW051 New Panda Corys.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CW049 VS CW051 --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory vs. CW051 New Panda Cory\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eCW049 and CW051\u003c\/strong\u003e are closely similar black-and-white\n    \u003cem\u003eHoplisoma\u003c\/em\u003e forms that entered the aquarium hobby from Colombia\n    around the same period.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Early imports created uncertainty over whether the two represented\n    separate species or merely different color patterns of a single species.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Captive breeding has since provided an important clue:\n    \u003cstrong\u003eboth forms have bred true to their characteristic patterns\u003c\/strong\u003e.\n    This strongly supports the interpretation that they represent distinct taxa\n    rather than simple individual color variation.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The easiest visible difference is the central body marking.\n    In \u003cstrong\u003eCW049\u003c\/strong\u003e, the black saddle is approximately as wide as\n    the base of the dorsal fin and usually narrows into a\n    \u003cstrong\u003ediamond or wedge shape\u003c\/strong\u003e down the side.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    In \u003cstrong\u003eCW051\u003c\/strong\u003e, the dark saddle is substantially broader\n    and extends farther toward the adipose-fin region.\n  \u003c\/p\u003e\n\n  \u003c!-- CW049 VS PANDA --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory vs. Panda Cory\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    CW049 can loosely resemble the familiar\n    \u003cstrong\u003ePanda Cory (\u003cem\u003eHoplisoma panda\u003c\/em\u003e)\u003c\/strong\u003e because both have\n    pale bodies and strong black markings.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    However, the classic Panda Cory has three relatively separate markings:\n    a dark eye mask, a dark dorsal marking, and a separate dark patch around\n    the caudal peduncle.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    CW049 instead has a much more dramatic\n    \u003cstrong\u003eblack diamond-shaped central body marking\u003c\/strong\u003e\n    extending downward from the dorsal-fin region.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    They are separate fish from different geographic regions and should not\n    be treated as color morphs of one another.\n  \u003c\/p\u003e\n\n  \u003c!-- LONG SNOUT FORM --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Is There a Long-Snouted Form of CW049?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    Specialist aquarium records report a\n    \u003cstrong\u003erare longer-snouted fish with a CW049-like pattern\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Current observations suggest that the longer-snouted form may belong\n    to a different evolutionary lineage, potentially closer to the modern\n    genus \u003cem\u003eBrochis\u003c\/em\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    This long-snouted form has not received its own CW number and appears\n    to be much less commonly encountered in the aquarium trade.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The standard CW049 offered under the\n    \u003cstrong\u003eBlack Diamond Cory\u003c\/strong\u003e name is the\n    \u003cstrong\u003eround- or short-snouted Hoplisoma form\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- CW NUMBER --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    What Does CW049 Mean?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eCW049\u003c\/strong\u003e, also written \u003cstrong\u003eCW49\u003c\/strong\u003e,\n    is the Corydoras World identification number assigned to this\n    undescribed Cory-type catfish.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    CW numbers provide aquarists, importers, breeders, and researchers with\n    a standardized way to identify distinctive Corydoradinae populations\n    before formal scientific descriptions are available.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Keeping the CW049 designation is especially important because this fish\n    can easily be confused with CW051 and other black-and-white\n    \u003cem\u003eHoplisoma\u003c\/em\u003e species.\n  \u003c\/p\u003e\n\n  \u003c!-- TAXONOMY --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Why Is CW049 Now Hoplisoma sp. CW049?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    CW049 was historically known as\n    \u003cstrong\u003e\u003cem\u003eCorydoras sp. CW049\u003c\/em\u003e\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Modern phylogenetic research demonstrated that the traditional broad\n    genus \u003cem\u003eCorydoras\u003c\/em\u003e contained several separate evolutionary lineages.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    In the major 2024 Corydoradinae revision, the large short-snouted\n    Lineage 9 group was placed in the resurrected genus\n    \u003cstrong\u003e\u003cem\u003eHoplisoma\u003c\/em\u003e\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Corydoras World now lists CW049 within this genus, so the appropriate\n    current hobby name is \u003cstrong\u003e\u003cem\u003eHoplisoma sp. CW049\u003c\/em\u003e\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- ORIGIN --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Where Do CW049 Black Diamond Corys Come From?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    CW049 originates from the\n    \u003cstrong\u003eColombia–Brazil border region of northwestern South America\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Specialist locality information places the fish in a\n    \u003cstrong\u003esmall creek flowing toward the Rio Içá\u003c\/strong\u003e,\n    near the indigenous settlement of \u003cstrong\u003eBoa Vista\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The Rio Içá is the Brazilian continuation of the\n    \u003cstrong\u003ePutumayo River system\u003c\/strong\u003e, part of the greater Amazon drainage.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Aquarium exports of CW049 have commonly moved through\n    \u003cstrong\u003eLeticia, Colombia\u003c\/strong\u003e, one of the most important ornamental\n    fish export centers in this border region.\n  \u003c\/p\u003e\n\n  \u003c!-- RARE \/ COLLECTOR --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Is the CW049 Black Diamond Cory Rare?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    CW049 remains a\n    \u003cstrong\u003especialty collector Cory in the aquarium trade\u003c\/strong\u003e.\n    It is much less widely available than common species such as Panda,\n    Bronze, Sterbai, or Peppered Corys.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Both wild-collected and captive-bred CW049 have appeared in the trade,\n    and successful breeding may gradually improve availability.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The term “rare” here refers to\n    \u003cstrong\u003eaquarium-trade availability\u003c\/strong\u003e and should not be interpreted\n    as an official conservation-status classification.\n  \u003c\/p\u003e\n\n  \u003c!-- BEHAVIOR --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory Behavior \u0026amp; Group Size\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    Black Diamond Corys are\n    \u003cstrong\u003epeaceful, social bottom-dwelling fish\u003c\/strong\u003e and should not\n    be kept individually.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Keep at least \u003cstrong\u003e6 CW049 Corys\u003c\/strong\u003e together.\n    Groups of \u003cstrong\u003e8 or more\u003c\/strong\u003e are even better when aquarium\n    size and availability allow.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    A proper social group usually encourages more confident movement,\n    group foraging, and visible activity around the aquarium.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Like other Corydoradinae catfish, CW049 may occasionally make a\n    rapid trip to the surface to gulp atmospheric air before returning\n    to the substrate. Occasional surface visits are normal behavior.\n  \u003c\/p\u003e\n\n  \u003c!-- TANK SETUP --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Ideal Aquarium Setup for CW049 Black Diamond Cory\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    A \u003cstrong\u003e20–30 gallon or larger freshwater aquarium\u003c\/strong\u003e provides\n    a practical starting point for a proper group of Black Diamond Corys.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Horizontal bottom space is more important than excessive aquarium height.\n    A longer aquarium allows the group to move and forage comfortably.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    A \u003cstrong\u003efine sand substrate\u003c\/strong\u003e is strongly recommended.\n    CW049 uses sensitive barbels around the mouth while searching through\n    the substrate for food.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Driftwood, roots, smooth stones, dried leaves, live plants, floating plants,\n    and shaded areas can provide security while open sandy sections allow\n    natural foraging.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Because CW049 is often associated with soft, acidic forest-stream habitats,\n    botanical materials such as dried leaves can work particularly well in a\n    natural-style aquarium, although a full blackwater setup is not mandatory\n    for healthy captive maintenance.\n  \u003c\/p\u003e\n\n  \u003c!-- WATER --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory Water Parameters\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    A practical aquarium temperature range for CW049 is approximately\n    \u003cstrong\u003e73–79°F (23–26°C)\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    A pH of approximately \u003cstrong\u003e5.5–7.2\u003c\/strong\u003e is suitable,\n    with soft to moderately soft water preferred.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Stable water quality is more important than constantly adjusting\n    the aquarium to reach one exact number.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Keep CW049 in a\n    \u003cstrong\u003emature, fully cycled aquarium with good biological filtration,\n    strong oxygenation, and regular partial water changes\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Ammonia and nitrite should remain at zero. This is especially important\n    for wild-origin or recently imported Black Diamond Corys.\n  \u003c\/p\u003e\n\n  \u003c!-- DIET --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    What Do CW049 Black Diamond Cory Catfish Eat?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eCW049 Black Diamond Corys are omnivorous benthic foragers\u003c\/strong\u003e\n    and should receive a varied diet provided specifically for them.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Good aquarium foods include:\n  \u003c\/p\u003e\n\n  \u003cul style=\"padding-left: 22px;\"\u003e\n    \u003cli\u003eHigh-quality sinking Cory pellets\u003c\/li\u003e\n    \u003cli\u003eBottom-feeder tablets or granules\u003c\/li\u003e\n    \u003cli\u003eBloodworms\u003c\/li\u003e\n    \u003cli\u003eBlackworms\u003c\/li\u003e\n    \u003cli\u003eBrine shrimp\u003c\/li\u003e\n    \u003cli\u003eDaphnia\u003c\/li\u003e\n    \u003cli\u003eTubifex\u003c\/li\u003e\n    \u003cli\u003eOther appropriately sized frozen or live foods\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    Wild-origin specimens may initially respond especially well to\n    frozen or live foods before becoming accustomed to prepared aquarium diets.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background: #fff8e8; border-left: 4px solid #d49a17; padding: 16px 18px; margin: 20px 0;\"\u003e\n    \u003cstrong\u003eImportant:\u003c\/strong\u003e CW049 Black Diamond Corys should not be\n    purchased simply as aquarium “cleaner fish.” Although they naturally\n    forage along the substrate, they require intentional feeding with a\n    complete and varied diet. Cory catfish do not replace regular water changes,\n    substrate cleaning, or normal aquarium maintenance.\n  \u003c\/div\u003e\n\n  \u003c!-- TANK MATES --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory Tank Mates\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    The peaceful temperament of\n    \u003cstrong\u003eHoplisoma sp. CW049\u003c\/strong\u003e makes it suitable for carefully\n    planned freshwater community aquariums.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Potential tank mates include peaceful tetras, pencilfish, rasboras,\n    small danios, peaceful dwarf cichlids, small gouramis, and other\n    non-aggressive freshwater species with compatible water requirements.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Other Cory-type catfish can also be compatible, but keeping another\n    species in the same aquarium does not replace the social requirement\n    for a proper group of CW049 itself.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Avoid large predatory fish, highly territorial bottom dwellers,\n    and aggressive or excessively competitive species.\n  \u003c\/p\u003e\n\n  \u003c!-- SEXING --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Male vs. Female CW049 Black Diamond Cory\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    Juvenile CW049 can be difficult to sex reliably.\n    Differences become clearer as fish reach maturity.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eAdult males\u003c\/strong\u003e generally remain slimmer and more streamlined.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eAdult females\u003c\/strong\u003e typically become larger and noticeably\n    broader through the abdomen, particularly when viewed from above.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Color and black-diamond pattern alone should not be used to determine sex,\n    because both males and females display the characteristic CW049 markings.\n  \u003c\/p\u003e\n\n  \u003c!-- WHY CHOOSE --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    Why Choose CW049 Black Diamond Cory Catfish?\n  \u003c\/h2\u003e\n\n  \u003cul style=\"padding-left: 22px;\"\u003e\n    \u003cli\u003e\u003cstrong\u003eDistinctive black diamond-shaped body marking\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eBold black eye mask on a pale body\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003eHigh-contrast collector appearance\u003c\/li\u003e\n    \u003cli\u003eHistoric CW049 \/ CW49 identification\u003c\/li\u003e\n    \u003cli\u003eStill-undescribed specialty Hoplisoma species\u003c\/li\u003e\n    \u003cli\u003ePeaceful social temperament\u003c\/li\u003e\n    \u003cli\u003eInteresting Colombia–Brazil border locality\u003c\/li\u003e\n    \u003cli\u003eCaptive breeding has been successfully established\u003c\/li\u003e\n    \u003cli\u003eExcellent choice for serious Cory and Hoplisoma enthusiasts\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- BEFORE BUYING --\u003e\n  \u003cdiv style=\"background: #f5faf8; border: 1px solid #d8e8e2; padding: 20px; margin: 30px 0; border-radius: 5px;\"\u003e\n    \u003ch2 style=\"color: #016141; font-size: 21px; margin: 0 0 10px 0;\"\u003e\n      Before Buying CW049 Black Diamond Cory Catfish\n    \u003c\/h2\u003e\n\n    \u003cp style=\"margin: 0;\"\u003e\n      CW049 Black Diamond Corys are social fish and should not be kept alone.\n      Plan to keep \u003cstrong\u003eat least 6 fish\u003c\/strong\u003e, with larger groups preferred\n      when space allows. Introduce them only to a mature, fully cycled aquarium\n      with fine sand, clean oxygen-rich water, peaceful tank mates, and a varied diet.\n      Because CW049 remains scientifically undescribed and is easily confused with\n      CW051, preserving accurate CW-number identification is especially important\n      for collectors and breeding programs.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003ch2 style=\"color: #016141; font-size: 24px; margin-top: 34px;\"\u003e\n    CW049 Black Diamond Cory Catfish FAQ\n  \u003c\/h2\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      What is a CW049 Black Diamond Cory Catfish?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      CW049 is an undescribed Cory-type catfish from the Colombia–Brazil\n      border region. It has a pale body, black eye mask, and a distinctive\n      diamond-shaped black marking extending downward from the dorsal-fin area.\n      Its modern designation is \u003cem\u003eHoplisoma sp. CW049\u003c\/em\u003e.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Is CW049 now Hoplisoma sp. CW049?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Yes. It was historically listed as \u003cem\u003eCorydoras sp. CW049\u003c\/em\u003e.\n      Following the 2024 revision of Corydoradinae, its short-snouted lineage\n      is placed within \u003cem\u003eHoplisoma\u003c\/em\u003e, making\n      \u003cem\u003eHoplisoma sp. CW049\u003c\/em\u003e the appropriate modern designation.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      What does CW049 mean?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      CW049 is the Corydoras World identification number assigned to this\n      scientifically undescribed fish. It allows aquarists and breeders\n      to identify the population consistently until a formal species name\n      is published.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Why is CW049 called the Black Diamond Cory?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      The common name refers to the sharply defined black diamond or\n      wedge-shaped marking that extends downward from the dorsal-fin region\n      against the fish's pale body.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      What is the difference between CW049 and CW051?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      CW049 generally has a narrower diamond- or wedge-shaped central black\n      marking approximately as wide as the dorsal-fin base. CW051 has a much\n      broader saddle-shaped black patch extending farther toward the adipose-fin area.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Are CW049 and CW051 different species?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Neither has yet received a formal scientific species description.\n      However, both forms have been bred in captivity and have maintained\n      their respective patterns, which strongly supports treating them as\n      distinct taxa rather than simple color variations.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Is CW049 the same as a regular Panda Cory?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      No. The regular Panda Cory is \u003cem\u003eHoplisoma panda\u003c\/em\u003e and comes\n      from a different part of South America. CW049 has a large\n      diamond-shaped central black marking that is not present on a\n      standard Panda Cory.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Is there a long-snouted CW049?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      A rare longer-snouted fish with a similar pattern has been reported\n      in the aquarium trade. Specialists suspect that this form may belong\n      to a different lineage, possibly closer to \u003cem\u003eBrochis\u003c\/em\u003e.\n      The standard CW049 Black Diamond Cory is the short-snouted\n      \u003cem\u003eHoplisoma\u003c\/em\u003e form.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      How big do CW049 Black Diamond Corys get?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Most aquarium references place adults around\n      \u003cstrong\u003e2–2.5 inches\u003c\/strong\u003e, with mature females generally\n      becoming larger and broader-bodied than males.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      How many CW049 Black Diamond Corys should be kept together?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Keep at least \u003cstrong\u003e6 CW049 Corys\u003c\/strong\u003e together.\n      Groups of 8 or more are even better when aquarium space and\n      availability allow.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      What temperature is best for CW049 Black Diamond Corys?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      A practical aquarium range is approximately\n      \u003cstrong\u003e73–79°F (23–26°C)\u003c\/strong\u003e, with a pH around\n      \u003cstrong\u003e5.5–7.2\u003c\/strong\u003e.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Where do CW049 Black Diamond Corys come from?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Specialist locality information places CW049 in the\n      \u003cstrong\u003eColombia–Brazil border region\u003c\/strong\u003e, in a small tributary\n      associated with the Rio Içá \/ Putumayo system near Boa Vista.\n      Many aquarium exports pass through Leticia, Colombia.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Is the CW049 Black Diamond Cory rare?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      CW049 is considerably less common in the aquarium trade than mainstream\n      Cory species and is generally considered a specialty collector fish.\n      This describes aquarium availability rather than an official\n      conservation-status category.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Are CW049 Black Diamond Cory Catfish peaceful?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Yes. CW049 is a peaceful social catfish that works well with calm\n      freshwater community fish such as tetras, pencilfish, rasboras,\n      and other non-aggressive species with compatible care requirements.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      What do CW049 Black Diamond Cory Catfish eat?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      Feed a varied diet containing quality sinking pellets, tablets,\n      or granules supplemented with frozen or live foods such as\n      bloodworms, blackworms, brine shrimp, daphnia, and Tubifex.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 13px 0;\"\u003e\n    \u003csummary style=\"cursor: pointer; font-weight: 700; color: #016141;\"\u003e\n      Do CW049 Black Diamond Corys clean the aquarium?\n    \u003c\/summary\u003e\n    \u003cp style=\"margin: 10px 0 5px 0;\"\u003e\n      CW049 naturally forage along the aquarium floor, but they should\n      not be treated as aquarium maintenance animals. They require intentional\n      feeding with nutritious foods along with regular water changes,\n      substrate cleaning, and normal aquarium maintenance.\n    \u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- FINAL CTA --\u003e\n  \u003cdiv style=\"margin-top: 34px; padding: 22px; background: #016141; color: #fff; border-radius: 5px;\"\u003e\n    \u003ch2 style=\"color: #fff; font-size: 23px; margin: 0 0 10px 0;\"\u003e\n      CW049 Black Diamond Cory Catfish at Tropicflow Aquatic\n    \u003c\/h2\u003e\n\n    \u003cp style=\"margin: 0;\"\u003e\n      Add one of the most distinctive black-and-white collector Corys to\n      your freshwater aquarium with the\n      \u003cstrong\u003eCW049 Black Diamond Cory Catfish\u003c\/strong\u003e.\n      With its bold black eye mask, signature diamond-shaped saddle,\n      peaceful social behavior, and still-undescribed collector status,\n      \u003cstrong\u003eHoplisoma sp. CW049\u003c\/strong\u003e is an exceptional choice for\n      Cory enthusiasts, planted aquariums, and carefully maintained\n      freshwater community tanks.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n","brand":"Tropicflow","offers":[{"title":"1 Fish","offer_id":52693855502634,"sku":null,"price":14.99,"currency_code":"USD","in_stock":false},{"title":"3 Fish","offer_id":52693855535402,"sku":null,"price":49.99,"currency_code":"USD","in_stock":false},{"title":"6 Fish – Recommended","offer_id":52693855568170,"sku":null,"price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/6237\/5466\/files\/CW049-Black-Diamond-Cory-Catfish-Hoplisomasp.CW049.png?v=1789924316","url":"https:\/\/tropicflow.com\/products\/cw049-black-diamond-cory-catfish-hoplisoma-sp-cw049","provider":"Tropicflow","version":"1.0","type":"link"}