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Osteogaster zygatus Eigenmann & Allen, 1942

Image contributors to this species:

Danny Blundell (1) Ian Fuller (1) Graham Ramsay (2) Yann Fulliquet (1) Mark Goh (1) Allan James (1) Joakim Schön (2)

ScotCat Sources:

Other Sources:

Relevant Information:

Very similar to Osteogaster rabauti and are sometimes difficult to tell apart. O. zygatus is a slimmer fish, not so colourful and grows larger. The fry of each of these two has proven that they are two separate Osteogaster species. (Fuller, 1980). 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 zygatus 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 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 zygatus: From the Greek zygados = 'team' or 'pair', possibly alluding to the close resemblance to Osteogaster rabauti. Remarks: Still found on some online sources as Corydoras zygatus.

Common Name:

None

Synonyms:

Corydoras zygatus

Family:

Callichthyidae

Distribution:

South America: Peru; Loreto, Rio Huallaga system, creek, Yurimaguas. Ecuador; Tributaries of the Rio Pastaza and Rio Tigre. Type locality: Creek, Yurimaguas [Peru].

Size:

Male: 6.5cm (2½ins) Female: 7.0cm (2¾ins)

Temp:

22-25°C (71-77°F)

p.H.

6.0-7.2.

Reference:

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.

Family: Callichthyidae Back to Ident-A-Cat Click on Thumbnails

Osteogaster zygatus

Osteogaster zygatus
8 year old female

Osteogaster zygatus

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