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Osteogaster zygata (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. zygata 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 "aenea 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 (Dias et al. 2024) Corydoras zygatus has now been placed in Lineage 7 and has the new genus name of Osteogaster and a specific name change to zygata. 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 zygata: 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 or Osteogaster 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 zygata

Osteogaster zygata
8 year old female

Osteogaster zygata

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