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Similar to Hoplisoma adolfoi but adolfoi has a thinner black back stripe and its pectoral fin spine is not serrated as in H. duplicareum. There are instances where the body stripe on H. duplicareum is thinner but it usually has a higher backed body form than H. adolfoi. Lineage: Placed in Lineage 9, the "short-snouted" species with the designated type species: C. punctatus. A revision in the future would constitute the resurrection of the genus name Hoplisoma (Agassiz, 1846). As of the latest revision (Dias et al 2024) Corydoras duplicareus has now been placed in Lineage 9 and has the new genus name of Hoplisoma and a change to the specific name to duplicareum. Aquarium Care: A minimum sized tank of 24” x 15” X 12” for a small shoal. Good quality aquarium sand such as BD Aquarium Sand, or very smooth rounded gravel as the preferred substrate when keeping these catfish. The aquarium should provide some shelter in the form of rocks or bogwood along with some aquatic plants. As with all other species of fish, water quality and general husbandry is very important, and recommended is that a minimum of 25% water is changed on a weekly to fortnightly basis. Diet: Readily accepts a mixed and varied diet which includes granular foods, frozen bloodworm and a good quality flake. Etymology: The specific name duplicareum: From the Latin; duplicare = to duplicate, alludes to the similar colour pattern in H. duplicareum and H. adolfoi (Sands, 1995). Remarks: This species is still found on some online sources as Corydoras duplicareus.

False Adolfoi Catfish

Corydoras duplicareus

Callichthyidae

South America: Brazil; Rio poranga, 8 kilometres north of the Nobua oba, prior to where it  joins a small tributary of the Upper Rio Negro.

Male: 5.0cm (2ins) Female: 5.5cm (2¼ins)

23-25°C (73-77°F)

6.0-7.2.