Scopelogadus beanii

Scopelogadus beanii
Conservation status
Data Deficient  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Beryciformes
Family:	Melamphaidae
Genus:	Scopelogadus
Species:	S. beanii
Binomial name
Scopelogadus beanii (Günther, 1887)
Synonyms[2]
Melamphaes beanii Günther, 1887 Melamphaes eurylepis Holt & Byrne, 1906 Plectromus beanii Günther, 1887 Plectromus crassiceps Bean, 1885 Scopelogadus beani Günther, 1887

Scopelogadus beanii, or Bean's bigscale, is a species of ridgehead fish.^[3][4][5] It is named for Tarleton Hoffman Bean.

Description

Bean's bigscale is dark brown or black in colour, with a maximum length of 12.2 cm (4.8 in). It is one of the largest and deepest-dwelling ridgeheads. It has two dorsal spines, one anal spine, 10–11 dorsal soft rays and 7–9 anal soft rays. Its caudal peduncle (the tapered region behind the dorsal and anal fins where the caudal fin attaches to the body) is long.^[6] It has ridges of thin bones supporting deep mucous cavities on the head.^[7]

Bean's bigscale has very large, weakly attached cycloid scales that are often lost during capture.^[7]

Habitat

Bean's bigscale is mesopelagic and bathypelagic, living at depths of up to 2,500 m (8,200 ft), and is common in the Atlantic Ocean, Pacific Ocean, Indian Ocean and Tasman Sea.^[8]

Behaviour

Scopelogadus beanii feeds on amphipods, polychaetes, jellyfish and mysids.^[9][10]

References

1. Harold, A. (2015). "Scopelogadus beanii". IUCN Red List of Threatened Species. 2015: e.T18238049A60792652. doi:10.2305/IUCN.UK.2015-4.RLTS.T18238049A60792652.en.
2. "WoRMS - World Register of Marine Species - Scopelogadus beanii (Günther, 1887)". www.marinespecies.org.
3. jorden, Carlsbergfondets oceanografiske ekspedition omkring (July 4, 1965). "The Carlsberg Foundation's Oceanographical Expedition Round the World 1928-30 and Previous "Dana"-expeditions, Under the Leadership of the Late Professor Johannes Schmidt: Dana Report. no. 1-". C. A. Reitzels forlag – via Google Books.
4. Smith, Margaret M.; Heemstra, Phillip C. (December 6, 2012). Smiths' Sea Fishes. Springer Science & Business Media. ISBN 9783642828584 – via Google Books.
5. Nations, Food and Agriculture Organization of the United (August 1, 2020). Identification guide to the mesopelagic fishes of the central and south east Atlantic Ocean. Food & Agriculture Org. ISBN 9789251330944 – via Google Books.
6. "Scopelogadus beanii, Bean's bigscale". www.fishbase.se.
7. "Scopelogadus beanii". fishesofaustralia.net.au.
8. Australia, Atlas of Living. "Species: Scopelogadus beanii (Bean's Bigscale)". bie.ala.org.au.
9. "Marine Species Identification Portal : Scopelogadus beanii". species-identification.org.
10. "WoRMS - World Register of Marine Species - Scopelogadus beanii (Günther, 1887)". www.marinespecies.org.