Biology:Anguilla bengalensis

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Short description: Species of fish

Anguilla bengalensis
Anguilla bengalensis Day 168.jpg
Anguilla bengalensis bengalensis.jpg
A. b. bengalensis
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Family: Anguillidae
Genus: Anguilla
Species:
A. bengalensis
Binomial name
Anguilla bengalensis
(J. E. Gray, 1831)
Subspecies

A. b. bengalensis
A. b. labiata

Synonyms[2]
  • Anguilla nebulosa nebulosa McClelland, 1844
  • Anguilla elphinstonei Sykes, 1839
  • Muraena maculata (non Lacepède, 1800)
  • Anguilla bengalensis (non Gray, 1831)

The mottled eel[3] (Anguilla bengalensis), also known as the African mottled eel, the Indian longfin eel, the Indian mottled eel, the long-finned eel or the river eel,[4] is a demersal, catadromous[5] eel in the family Anguillidae.[6] It was described by John McClelland in 1844.[7] It is a tropical, freshwater eel which is known from East Africa, Bangladesh, Andaman Islands, Mozambique, Malawi, Sri Lanka, Sumatra, and Indonesia and recently from Madagascar .[8] The eels spend most of their lives in freshwater at a depth range of 3–10 metres, but migrate to the Indian Ocean to breed. Males can reach a maximum total length of 121 centimetres and a maximum weight of 7,000 grams.[6] The eels feed primarily off of benthic crustaceans, mollusks, finfish and worms.[9]

Even though widely distributed, the Mottled eel was listed as Near Threatened by the IUCN Redlist as of 2019.[10] Although the eels are too large for use in aquariums, they are commercial in subsistence fisheries.[6]

The exact classification of the species was a debate in recent times, where some major fish websites (ex. Fish Base) classified the species under the name A. nebulosa. But according to the IUCN Red List 2015 version, the fish species should be classified as A. bengalensis with some subspecies.[11]

Subspecies

References

  1. Pike, C.; Crook, V.; Jacoby, D.; Gollock, M. (2020). "Anguilla bengalensis". IUCN Red List of Threatened Species 2020: e.T61668607A176497430. doi:10.2305/IUCN.UK.2020-3.RLTS.T61668607A176497430.en. https://www.iucnredlist.org/species/61668607/176497430. Retrieved 12 November 2021. 
  2. Synonyms of Anguilla nebulosa at www.fishbase.org.
  3. "Long-finned eel (Anguilla nebulosa) longevity, ageing, and life history". http://genomics.senescence.info/species/entry.php?species=Anguilla_nebulosa. 
  4. Common names for Anguilla nebulosa at www.fishbase.org.
  5. "Mottled eel (Anguilla nebulosa) - Pictures and facts - Fish @ thewebsiteofeverything.com". https://thewebsiteofeverything.com/animals/fish/Anguilliformes/Anguillidae/Anguilla-nebulosa. 
  6. 6.0 6.1 6.2 Anguilla nebulosa at www.fishbase.org.
  7. McClelland, J., 1844 (5 July) [ref. 2928] Apodal fishes of Bengal. Calcutta Journal of Natural History v. 5 (no. 18): 151-226, Pls. 5-14.
  8. Frost, Winifred E.; IMAMURA K (1957). "First Record of the Elver of the African Eel Anguilla nebulosa labiata Peters". Nature 179 (4559): 594–5. doi:10.1038/179594a0. PMID 13418745. Bibcode1957Natur.179..594F. 
  9. Food items reported for Anguilla nebulosa at www.fishbase.org.
  10. Pike, C.; Crook, V.; Gollock, M.; Jacoby, D. (2019). "Anguilla bengalensis". IUCN Red List of Threatened Species 2019: e.T61668607A96227813. doi:10.2305/IUCN.UK.2019-3.RLTS.T61668607A96227813.en. https://www.iucnredlist.org/species/61668607/96227813. Retrieved 15 January 2020. 
  11. Pike, C.; Crook, V.; Gollock, M.; Jacoby, D. (2019). "Anguilla bengalensis". IUCN Red List of Threatened Species 2019: e.T61668607A96227813. doi:10.2305/IUCN.UK.2019-3.RLTS.T61668607A96227813.en. https://www.iucnredlist.org/species/61668607/96227813. Retrieved 9 January 2020. 
  12. Froese, Rainer, and Daniel Pauly, eds. (2006). Anguilla bengalensis bengalensis in FishBase. 05 2006 version.
  13. Froese, Rainer, and Daniel Pauly, eds. (2006). Anguilla bengalensis labiata in FishBase. 05 2006 version.

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