Blepsias bilobus

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Blepsias bilobus
Blepsias bilobus.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Agonidae
Genus: Blepsias
Species:
B. bilobus
Binomial name
Blepsias bilobus
Cuvier, 1829
Synonyms [1]
  • Histiocottus bilobus(Cuvier, 1829)

Blepsias bilobus, the crested sculpin, is a species of sculpin belonging to the subfamily Hemitripterinae of the family Agonidae. This species is found in the North Pacific Ocean.

Contents

Taxonomy

Blepsias bilobus was first formally described in 1829 by the French zoologist Georges Cuvier with the type locality given as Kamchatka. [2] This sculpin is classified in the subfamily Hemitripterinae of the family Agonidae. [3] The specific name bilobus means "two lobed", an allusion to the deeply incised dorsal fin giving the impression of two lobes, Cuvier mistakenly thought that Blepsias cirrhosus had three lobes and gave it the name Blepsias trilobus. [4]

Description

Blepsias bilobus has a deep, compressed body which is covered in papillae which enclose a small spine that is embedded in a bony plate in the skin. There are cirrhi on the chin. The first dorsal fin is smoothly rounded and is not notched. The second dorsal fin and the anal fin are large and are located opposite each other. [5] There are 8 or 9 spines in the dorsal fin and 21 or 22 soft rays while the anal fin has 18 to 20 soft rays. [1] The pectoral fin contains between 15 and 17 rays and the small pelvic fin has 3 soft rays. [5] The caudal fin is rounded. [1] The color is brown to olive-green on the upper body with indistinct blotches on the back, paler ventrally. The fins have dusky blotches except fot the dark barred pectoral fin. [5] The maximum published standard length is 25 cm (9.8 in). [1]

Distribution and habitat

Blepsias bilobus is found in the North Pacific Ocean where it distributed from the northern Sea of Japan north to the Bering Sea and alongthe western coast of North America to northern British Columbia. This is a nearshore, demersal fish found at depths between 0 and 250 m (0 and 820 ft), although it is frequently found clear of the substrate. [1]

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References

  1. 1 2 3 4 5 Froese, Rainer; Pauly, Daniel (eds.) (2022). "Blepsias bilobus" in FishBase. August 2022 version.
  2. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Blepsias". Catalog of Fishes . California Academy of Sciences . Retrieved 31 December 2022.
  3. J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 467–495. ISBN   978-1-118-34233-6.
  4. Christopher Scharpf & Kenneth J. Lazara, eds. (22 October 2022). "Order Perciformes: Suborder Cottoidea: Infraorder Cottales: Families Trichodontidae, Jordaniidae, Rhamphocottidae, Scorpaenichthyidae and Agonidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 31 December 2022.
  5. 1 2 3 William N. Eschmeyer and Earl S. Herald (1999). Roger Tory Peterson (ed.). A Field Guide to Pacific Coast Fishes: North America. Peterson field guide series. Houghton Mifflin Harcourt. p. 184. ISBN   061800212X.