Ossubtus xinguense
| Ossubtus xinguense | |
|---|---|
| Not evaluated (IUCN 3.1) | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Serrasalmidae |
| Genus: | Ossubtus Jégu, 1992 |
| Species: | O. xinguense |
| Binomial name | |
| Ossubtus xinguense Jégu, 1992 | |
Ossubtus xinguense is a species of fish in the family Serrasalmidae endemic to the Xingu River basin, from the rapids of Volta Grande do Xingu and the lower Rio Iriri.[1] It has an unusual downturned mouth that gives the appearance of a beak.[2] This fish is endangered but it has not been rated by the IUCN.[2][3]
Ecology
This species is strictly rheophilic.[1] Young specimens of up to 4 cm (1.6 in) SL could be observed in schools of 20–30 individuals, sheltered under broad stones.[2] This species is omnivorous. Shrimp, dead or alive, blood worm, vegetable matter, brine shrimp and daphnia are consumed in captivity. The female is far more dominant than the male and will often seek caves into which no other fish may enter. This is believed to be due to reproductive dominance, once a suitable breeding location is found, the female will not surrender it.
References
- 1 2 Andrade, M.C., Sousa, L.M., Ota, R.P., Jégu, M. & Giarrizzo, T. (2016): Redescription and Geographical Distribution of the Endangered Fish Ossubtus xinguense Jégu 1992 (Characiformes, Serrasalmidae) with Comments on Conservation of the Rheophilic Fauna of the Xingu River. PLoS ONE, 11 (9): e0161398.
- 1 2 3 Jégu, M. & Zuanon, J. (2005): Threatened fishes of the world: Ossubtus xinguense (Jégu 1992) (Characidae: Serrasalminae). Environmental Biology of Fishes, 73 (4): 414-414.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2016). "Ossubtus xinguense" in FishBase. June 2016 version.