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Clarias nigricans

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Clarias nigricans
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Clariidae
Genus: Clarias
Species:
C. nigricans
Binomial name
Clarias nigricans
H. H. Ng, 2003
Clarias nigricans is located in Borneo
Samarinda
Holotype (Nov. 1999)
Samarinda
Paratypes (May. 1909)
Clarias nigricans (Borneo)

Clarias nigricans is a species of clariid catfish. It is only known from the Mahakam River in eastern Borneo. The eel-like catfish of this region were long assumed to belong to the widespread species Clarias nieuhofii but examination of 6 specimens purchased from a fish market in Samarinda in 1999 and preserved specimens from the same location revealed consistent and distinctive differences indicating a separate species.

This is an elongated catfish up to 30.8 cm (12.1 inches) standard length. Compared to C. nieuhofii it has a "neck" distinctly narrower than the head, giving the head an egg-shaped appearance when viewed from above or below and the overall colour is much darker: purplish grey with much fainter white spots arranged in one row below the lateral line instead of two. It is a omnivore.

References

[edit]
  1. ^ Ng, H.H. (2019). "Clarias nigricans". IUCN Red List of Threatened Species. 2019: e.T91226566A91226573. doi:10.2305/IUCN.UK.2019-3.RLTS.T91226566A91226573.en. Retrieved 20 November 2021.