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Ingo Seidel (2)

Newly described by Tencatt, L. F. C. et al 2025, and was given the CW number of 68 before description. Similar looking to O. zygata from Peru in body colour, but is a much larger fish. Habitat: Currently, the new species is known from its type-locality, the Rio Aripuanã basin, with an additional record in the Rio Juruena basin, both Mato Grosso State, Brazil (Tencatt, L. F. C. et al 2025). Lineage: Placed in Lineage 7 alongside other members of the so called "aenea/us group" with the designated type species: C. eques. A revision in the future would constitute the resurrection of the genus name Osteogaster (Cope, 1871). Aquarium Care: This is akin to most of this genus, very peaceful, and would be best housed with small to medium tank mates such as Tetras, Rasboras and Danios or in a species tank for breeding purposes. Diet: A good quality flake food and tablet food for adults with sporadic feedings of frozen or live food will keep your Corydoras/Osteogaster in good health. Etymology: The specific name oharai: named in honour of Dr. Willian Massaharu Ohara, dear friend and distinctive ichthyologist, not only for his extensive contributions to knowledge of South American freshwater fishes, but for having played a fundamental role in the professional history of LFCT, having generously donated dozens of species of Corydoradinae collected by him over the last decade, some of which were described in collaboration. A noun in a genitive case. Remarks: Still found on some online sources as Corydoras sp. (CW068) or Osteogaster sp. (CW068).

CW068

None

Callichthyidae

South America: Brazil, Rio Aripuanã.

Male: 4.0 cm (1½ins) Female: 4.5cm (1¾ins)

22-25°C (71-77°F)

6.5-7.5.

Alexandrou, Markos & Taylor, Martin. (2011). Evolution, ecology and taxonomy of the Corydoradinae revisited.
Angelica C Dias, Luiz F C Tencatt, Fabio F Roxo, Gabriel de Souza da Costa Silva, Sérgio A Santos, Marcelo R Britto, Martin I Taylor, Claudio Oliveira, Phylogenomic analyses in the complex Neotropical subfamily Corydoradinae (Siluriformes: Callichthyidae) with a new classification based on morphological and molecular data, Zoological Journal of the Linnean Society, 2024;, zlae053.
Ian A. M. Fuller & Hans-Georg Evers (2011). Identifying Corydoradinae Catfish Supplement 1. Ian Fuller Enterprises.
Tencatt, L. F. C., Carvalho, V. de ., Silva, H. P. da ., & Britto, M. R. de. (2025). A new striped Osteogaster (Siluriformes: Callichthyidae) from the Madeira and Tapajós river basins, Brazil, with a new generic diagnosis and an identification key to the species of Osteogaster. Neotropical Ichthyology, 23(2), e240134.
www.corydorasworld.com