Pygmy rockfish

Pygmy rockfish
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Scorpaenidae
Genus: Sebastes
Species:
S. wilsoni
Binomial name
Sebastes wilsoni
Synonyms[1]

Sebastodes wilsoni Gilbert, 1915

The pygmy rockfish (Sebastes wilsoni), also known as the slender rockfish or Wilson's rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the eastern Pacific Ocean.

Taxonomy

The pygmy rockfish was first formally described as Sebastodes wilsoni in 1915 by the American ichthyologist Charles Henry Gilbert with the type locality given as Albatross station 4518 at a depth of 66-140 fathoms off Monterey, California.[2] Some authorities classify this species in the subgenus Allosebastes.[3] The specific name honors Charles Branch Wilson, a marine biologist and authority on crustacean parasites of fishes.[4]

Description

The pygmy rockfish, as its name suggests, is a small species of rockfish which grows to a maximum total length of 23 cm (9.1 in). The dorsal fin has 13 spines and 13 or 14 soft rays while the anal fon contains 3apines and 6 or 7 soft rays. There are robust spines on the head and the nasal, preocular, postocular, tympanic and parietal spines are present while the supraocular, coronal, and nuchal spines are absent. The caudal fin is truncate or weakly rounded.[1] The color is pale brown tinted with red, paler below. There are 4 dark blotches along the dorsal fin and these extend from the back onto the fin, these can be indistinct. There is a brownish red stripe along the lateral line. The color is notably darker on the back than on the underside.[5]

Distribution and habitat

The pygmy rockfish is found in the eastern Pacific Ocean along the western coast of North America from Kodiak Island and the northern Gulf of Alaska to Baja California. It is a demersal fish which is found at depths between 30 and 274 m (98 and 899 ft).[1] It is found offshore in rocky areas.[6]

Biology

The pygmy rockfish, like its congeners, is ovoviviparous.[1]

References

  1. ^ a b c d Froese, Rainer; Pauly, Daniel (eds.). "Sebastes wilsoni". FishBase. August 2021 version.
  2. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Sebastes". Catalog of Fishes. California Academy of Sciences. Retrieved 18 December 2021.
  3. ^ Z. Li; A.K. Gray; M.S. Love; A. Goto; A.J. Gharrett (2007). "Are the Subgenera of Sebastes Monophyletic?" (PDF). Biology, Assessment, and Management of North Pacific Rockfishes. Alaska Sea Grant College Program.
  4. ^ Christopher Scharpf & Kenneth J. Lazara, eds. (22 May 2021). "Order Perciformes (Part 8): Suborder Scorpaenoidei: Families Sebastidae, Setarchidae and Neosebastidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 18 December 2021.
  5. ^ "Finfish Species Rockfish in Oregon". Oregon Department of Fish and Wildlife. Retrieved 18 December 2021.
  6. ^ Richard Starr; Mary Yoklavich (2008). "Monitoring MPAs in Deep Water Off Central California" (PDF). California Sea Grant College Program. Retrieved 18 December 2021.


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