Scopelarchus analis

Scopelarchus analis
Conservation status
Least Concern  (IUCN 3.1) [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Aulopiformes
Family:	Scopelarchidae
Genus:	Scopelarchus
Species:	S. analis
Binomial name
Scopelarchus analis (Brauer, 1902)
Synonyms
Dissomma analeBrauer, 1902

Scopelarchus analis, the short fin pearleye or blackbelly pearleye, ^[1] is a species of ray-finned fish that can be found circumglobal in warm waters. ^[2] It is a member of the Scopelarchus , a genus of pearleyes.

Size

This species reaches a max length of 12.6 cm (4.96 in). ^[3]

Biology

It has a unique cylindrical eye that it is directed dorsally. This allows the fish to gain a binocular view of the water column above. ^[4] The fish also possesses a unique adaptation where it has multiple retinae. The primary retina is located at the base of the cylinder, an accessory retina along the nasal wall, and between the two is a retinal diverticulum. ^[4]

References

1. Bannermann, P.; Nunoo, F.; Poss, S.; Russell, B. (2015). "Scopelarchus analis". IUCN Red List of Threatened Species . 2015 e.T190316A15603060. doi: 10.2305/IUCN.UK.2015-4.RLTS.T190316A15603060.en . Retrieved 7 July 2024.
2. Davis, Matthew P. (March 2015). "Evolutionary Relationships of the Deep-Sea Pearleyes (Aulopiformes: Scopelarchidae) and a New Genus of Pearleye from Antarctic Waters". Copeia. 103 (1): 64–71. doi: 10.1643/CI-14-139 . ISSN   0045-8511.
3. Johnson, Robert Karl (1974). "Five New Species and a New Genus of Alepisauroid Fishes of the Scopelarchidae (Pisces: Myctophiformes)". Copeia. 1974 (2): 449–457. doi:10.2307/1442536. ISSN   0045-8511. JSTOR   1442536.
4. Pointer, Marie A.; Carvalho, Livia S.; Cowing, Jill A.; Bowmaker, James K.; Hunt, David M. (2007-08-15). "The visual pigments of a deep-sea teleost, the pearl eye Scopelarchus analis". Journal of Experimental Biology. 210 (16): 2829–2835. doi: 10.1242/jeb.006064 . ISSN   1477-9145. PMID   17690230.