Kihnichthys

Kihnichthys
Conservation status
Data Deficient  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cichliformes
Family:	Cichlidae
Genus:	Kihnichthys McMahan & Matamoros, 2015[2]
Species:	K. ufermanni
Binomial name
Kihnichthys ufermanni (Allgayer, 2002)
Synonyms
Cichlasoma ufermanni Allgayer, 2002 Theraps ufermanni Allgayer, 2002

Kihnichthys ufermanni, the Usumacinta cichlid, is a species of cichlid found in a few rivers in the Usumacinta River basin in Guatemala and southern Mexico. It typically occurs in rivers that are about 10–50 m (33–164 ft) wide, fairly deep, have few or no aquatic plants, and a variable water current.[1] This species is the only known member of its genus,[2] but several of its features, including the chisel-like teeth, are shared with Cincelichthys and whether they should be merged into a single genus is not yet fully resolved;[3] a review in 2020 recommended that the Usumacinta cichlid should be moved into Cincelichthys.[4] The Usumacinta cichlid reaches a standard length of 25 cm (10 in).[5]

The generic name honours the Guatemalan ichthyologist Herman A. Kihn while the specific name honours the German aquarist, and friend of Robert Allgayer's, Alfred Ufermann who died in 2000.[6]

References

1. Lyons, T.J. (2019). "Kihnichthys ufermanni". IUCN Red List of Threatened Species. 2019: e.T192889A2179668. doi:10.2305/IUCN.UK.2019-2.RLTS.T192889A2179668.en. Retrieved 28 December 2021.
2. McMahan, C.D.; Matamoros, W.A.; Piller, K.R.; Chakrabarty, P. (2015). "Taxonomy and systematics of the herichthyins (Cichlidae: Tribe Heroini), with the description of eight new Middle American Genera" (PDF). Zootaxa. 3999 (2): 211–234. doi:10.11646/zootaxa.3999.2.3. PMID 26623572. S2CID 34699955.
3. Říčan, O.; Piálek, L.; Dragová, K. & Novák, J. (2016). "Diversity and evolution of the Middle American cichlid fishes (Teleostei: Cichlidae) with revised classification". Vertebrate Zoology. 66 (1): 1–102. doi:10.3897/vz.66.e31534.
4. Artigas Azas, Juan Miguel (2021). "Kihnichthys, a junior synonym of Cincelichthys". Cichlid News Magazine. 29 (4 ed.): 10–12.
5. Froese, Rainer; Pauly, Daniel (eds.). "Kihnichthys ufermanni". FishBase. December 2021 version.
6. Christopher Scharpf & Kenneth J. Lazara (5 August 2023). "Order CICHLIFORMES: Family CICHLIDAE: Subfamily CICHLINAE (a-c)". The ETYFish Project Fish Name Etymology Database. v. 12.0. Christopher Scharpf and Kenneth J. Lazara. Retrieved 21 June 2024.