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Hans-Georg Evers (1) Graham Ramsay (3) Haakon Haagensen (1) Allan James (3) Joakim Schön (1)

There are three species that are very similar. The first species depicted here was collected in the type locality for O. eques in Brazil and is the true O. eques. The other two species that are alike are from Peru, one is caught alongside O. rabauti in the upper Ucayali, Corydoras cf. eques, which has been given the CW number of CW043 and is almost identical to O. eques apart from a slight difference in body shape and colour pattern but has proved to be O. eques, and the other is captured alongside O. zygatus and has been given the CorydorasWorld number of CW007. Lineage: Placed in Lineage 7 alongside other members of the so called "aeneus group" with the designated type species: C. eques. A revision in the future would constitute the resurrection of the genus name Osteogaster Cope, 1871. As of the latest update Corydoras eques has now been placed in Lineage 7 and has the new genus name of Osteogaster (2024). Aquarium Care: This is akin to most of this genus, very peaceful, and would be best housed with small to medium sized tankmates such as Tetras, Rasboras and Danios or in a species tank for breeding purposes. Best to purchase 6 individuals or more as they will be happier in a group. Diet: Readily accepts a mixed and varied diet which includes granular foods, tablet food, frozen bloodworm and a good quality flake. Etymology: The specific name eques: Latin for horseman or rider, allusion not explained, possibly referring to oblique saddle-like orange band behind eyes running between base of pectoral fins and over the head (Steindachner used this name for three characiforms with saddle-like markings: Abramites eques, Nannostomus eques, Hyphessobrycon eques). Remarks: CW043 and C. eques are now one and the same species. Still found on some online sources as Corydoras eques.

Horseman Cory, CW043

Corydoras eques

Callichthyidae

South America: Brazil; Amazonas, Rio Amazonas at Codajas.

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

22-26°C (71-79°F)

6.0-7.5.

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.
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.
www.corydorasworld.com