Taxonomy & naming
This is an undescribed form: no scientific name, authority or type material stands behind it, and its identity and range are not documented in the sources the atlas uses. CW51 (also written CW051) is a Corydoras World code. Imperial Tropicals says it was filed as Corydoras sp. CW051 before the 2024 revision and is now listed under Hoplisoma.
Morphology
Imperial Tropicals describes a white or tan body with a black eye mask and a large black spot from the lateral line above the pectoral fin into the dorsal fin. The seller says the spot is rounded and almost semicircular, which separates it from the diamond-shaped spot of the black diamond hoplisoma (CW049).
Habitat
Imperial Tropicals states that it comes from a small creek near the settlement of Villa Bittencourt, in tannin-stained water among fallen branches, and that the black diamond hoplisoma sometimes lives alongside it. No habitat measurements are recorded.
Feeding
Corydoradines are bottom-feeding omnivores that sift sand with their barbels (genus-level); no diet is documented for this form.
Mating
Like other corydoradines, the genus spawns in the T-position, the female carrying eggs in her pelvic fins before sticking them to a surface. Spawning of this form is not documented.
Breeding
No captive-breeding record for this form is held by the atlas.
In the aquarium
The atlas holds no seller care figures for this form beyond its habitat. Corydoradines in general do best on sand, in clean water and in a group of their own kind.
Conservation
No IUCN assessment exists for this undescribed form. Its range and numbers are not documented, so its conservation status cannot be stated.