Nematogenys inermis

Nematogenys inermis
Conservation status
	; Data Deficient (IUCN 2.3)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Siluriformes
Superfamily:	Loricarioidea
Family:	Nematogenyidae; C. H. Eigenmann, 1927
Genus:	Nematogenys; Girard, 1855
Species:	N. inermis
Binomial name
	Nematogenys inermis; Guichenot, 1848
Synonyms
	Trichomycterus inermis; Guichenot, 1848; Nematogenys nigricans; Philippi, 1866; Nematogenys pallidus; Philippi, 1866;

Nematogenys inermis is a species of mountain catfish, the only extant species in the family Nematogenyiidae. This species is endemic to Chile where it is found in fresh waters in central Chile.[2] This species grows to a length of 40.7 cm (16.0 in) NG.[3]

The body is naked (without scales) and elongated. The three pairs of barbels are the chin (mental) barbels, maxillary barbels, and nasal barbels. No adipose fin is present. The opercle lacks spines.[2]

The Nematogenyidae and Trichomycteridae are sister groups that together form a clade sister to the families Callichthyidae, Scoloplacidae, Astroblepidae, and Loricariidae.[4]

One extinct species, Nematogenys cuivi, has been described in this genus.

References

World Conservation Monitoring Centre (1996). "Nematogenys inermis". IUCN Red List of Threatened Species. 1996: e.T14499A4439942. doi:10.2305/IUCN.UK.1996.RLTS.T14499A4439942.en. Retrieved 20 November 2021.
Nelson, Joseph, S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7.{{cite book}}: CS1 maint: multiple names: authors list (link)
Froese, Rainer; Pauly, Daniel (eds.) (2011). "Nematogenys inermis" in FishBase. December 2011 version.
Diogo, Rui; Chardon, Michel; Vandewalle, Pierre (January 2006). "On the osteology and myology of the cephalic region and pectoral girdle of Nematogenys inermis (Ghichenot, 1848), with comments on the autapomorphies and phylogenetic relationships of the Nematogenyidae (Teleostei : Siluriformes)" (PDF). Belg. J. Zool. 136 (1): 15–24. Archived from the original (PDF) on 2013-10-19. Retrieved 2007-06-15.

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[iucn_status_20_November_2021-1] World Conservation Monitoring Centre (1996). "Nematogenys inermis". IUCN Red List of Threatened Species. 1996: e.T14499A4439942. doi:10.2305/IUCN.UK.1996.RLTS.T14499A4439942.en. Retrieved 20 November 2021.

[nelson-2] Nelson, Joseph, S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7.{{cite book}}: CS1 maint: multiple names: authors list (link)

[3] Froese, Rainer; Pauly, Daniel (eds.) (2011). "Nematogenys inermis" in FishBase. December 2011 version.

[4] Diogo, Rui; Chardon, Michel; Vandewalle, Pierre (January 2006). "On the osteology and myology of the cephalic region and pectoral girdle of Nematogenys inermis (Ghichenot, 1848), with comments on the autapomorphies and phylogenetic relationships of the Nematogenyidae (Teleostei : Siluriformes)" (PDF). Belg. J. Zool. 136 (1): 15–24. Archived from the original (PDF) on 2013-10-19. Retrieved 2007-06-15.