Osteogaster eques

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Osteogaster eques
Corydoras eques.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Callichthyidae
Genus: Osteogaster
Species:
O. eques
Binomial name
Osteogaster eques
(Steindachner, 1876) [2]
Synonyms [2]
  • Corydoras equesSteindachner, 1876

Osteogaster eques, the horseman's cory catfish or true eques cory, [3] [4] is a tropical freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It was first described by Austrian zoologist Franz Steindachner. [5] It is native to the Brazilian Amazon basin. [6] The name eques means "knight", "horseman" or "rider" in Latin. [7]

Life cycle

The male fertilizes the female's 2–4 eggs between her pelvic fins for around 30 seconds. Only then does the female swim to a suitable location and attach the very adhesive eggs. The couple continues doing this until around 100 eggs have been fertilized and connected. [8]

References

  1. ↑ Frederico, R.G. (2023). "Corydoras eques". IUCN Red List of Threatened Species . 2023 e.T49829981A159296257. doi: 10.2305/IUCN.UK.2023-1.RLTS.T49829981A159296257.en . Retrieved 20 September 2025.
  2. 1 2 Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Osteogaster". Catalog of Fishes . California Academy of Sciences . Retrieved 12 December 2025.
  3. ↑ "Horseman's Cory Catfish (Corydoras eques)". aquaticarts.com. Retrieved 2022-11-29.
  4. ↑ "True Eques Cory (Corydoras eques)". Aqua Imports. Retrieved 2022-11-29.
  5. ↑ "ScotCat Factsheets: October 2013: Osteogaster eques Steindachner, 1877". www.scotcat.com. Archived from the original on 17 July 2025. Retrieved 20 September 2025.
  6. ↑ "Corydoras eques | Cory Database". corydoras.zone. 2022-04-07. Archived from the original on 2022-11-29. Retrieved 2022-11-29.
  7. ↑ "Corydoras eques". aquainfo.org. Archived from the original on 2022-12-01. Retrieved 2022-12-01.
  8. ↑ Baensch, R. A. and R. Riehl (1991). Aquarien Atlas (in German). Vol. Band. 1.[ page needed ].
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