''Ptychochromis onilahy'' is a species of
cichlid endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...
to the
Onilahy River in southwestern
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...
. Despite several recent visits to the region, this species has not been recorded since 1962 when the only known five
specimen
Specimen may refer to:
Science and technology
* Sample (material), a limited quantity of something which is intended to be similar to and represent a larger amount
* Biological specimen or biospecimen, an organic specimen held by a biorepository ...
s were collected.
It is listed as
extinct by the
IUCN (their initial rating was made before its
official description, and therefore listed under the temporary name ''Ptychochromis sp. nov. 'Kotro),
but the Onilahy River system is large, and there is a small chance remnant populations exist in remote regions.
[Stiassny, M., and Sparks, J. S. (2006). ''Phylogeny and Taxonomic Revision of the Endemic Malagasy Genus Ptychochromis (Teleostei: Cichlidae), with the Description of Five New Species and a Diagnosis for Katria, New Genus.'' ]American Museum Novitates
''American Museum Novitates'' is a peer-reviewed academic journal published by the American Museum of Natural History. It was established in 1921. According to the ''Journal Citation Reports'', the journal has a 2013 impact factor
The impact f ...
3535. This species can reach a length of
SL.
References
onilahy
Extinct animals of Madagascar
Fish described in 2006
Taxonomy articles created by Polbot
{{Cichlidae-stub