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Indoreonectes evezardi

From Wikipedia, the free encyclopedia

Indoreonectes evezardi
Individual from the cave-adapted population
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Nemacheilidae
Genus: Indoreonectes
Species:
I. evezardi
Binomial name
Indoreonectes evezardi
(F. Day, 1872)
Synonyms
  • Nemacheilus evezardi Day, 1872
  • Noemacheilus evezardi (Day, 1872)
  • Oreonectes evezardi (Day, 1872)

Indoreonectes evezardi is a species of ray-finned fish in the family Nemacheilidae. Earlier it was known as Nemacheilus evezardi described by Day (1878) captured from a river stream near Pune. It is endemic to India, found in the Western Ghats and the Satpuras. Most populations are found in normal streams, but two distinct cave-adapted forms exist in Kotumsar Cave.

Etymology

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The fish is named in honor of Col. George C. Evezard (1826-1901), of the Bombay Staff Corps, who helped in procuring the type specimen.[2]

Divergence of cave populations

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Due to lack of light and limited source of energy input (food) the cave populations of Indoreonectes evezardi are either found in albinic form with very regressed eyes or with very limited pigmentation and small eyes while compared to its epigean counterparts. Due to subterranean mode of life the complete physiological activities of the cave forms get limited and/or altered [1][2].

IUCN status

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Though in International Union for Conservation of Nature (IUCN) Red List of Threatened Species, this particular species is designated in Least Concern (LR/lc)category, but it could not be ruled out that special attention is required to protect the cave forms of Indoreonectes evezardi.

References

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  1. ^ Shaji, C.P. (2011). "Indoreonectes evezardi". IUCN Red List of Threatened Species. 2011: e.T10823A3219098. doi:10.2305/IUCN.UK.2011-1.RLTS.T10823A3219098.en. Retrieved 16 November 2021.
  2. ^ Christopher Scharpf & Kenneth J. Lazara (2 February 2024). "Family NEMACHEILIDAE Regan 1911 (Stone or Brook Loaches)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 5 February 2024.