Sebastes rastrelliger

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Sebastes rastrelliger
Sebastes rastrelliger.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Scorpaenidae
Genus: Sebastes
Species:
S. rastrelliger
Binomial name
Sebastes rastrelliger
(Jordan & Gilbert, 1880)
Synonyms [1]
  • Sebastichthys rastrelligerJordan & Gilbert, 1880
  • Sebastodes rastrelliger(Jordan & Gilbert, 1880)

Sebastes rastrelliger, the grass rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is native to the waters of the eastern Pacific Ocean.

Contents

Grass Rock Fish (Sebastes rastrelliger) caught off the coast of Goleta California Grass Rockfish.jpg
Grass Rock Fish (Sebastes rastrelliger) caught off the coast of Goleta California

Taxonomy

Sebastes rastrelliger was first formally described as Sebastichthys rastrelliger in 1880 by the American ichthyologists David Starr Jordan and Charles Henry Gilbert with the type locality given as Point Conception to Santa Catalina Island in California. [2] Some authorities place this species in the subgenus Pteropodus. [3] The specific name rastrelliger is a compound of rastrella, a diminutive of rastrum which means "rake" with iger meaning "to bear", a reference to the short gill rakers as described by Jordan and Gilbert. [4]

Small Grass Rockfish Grass Rockfish on Jig.JPG
Small Grass Rockfish

Description

Sebastes rastrelliger has a body which has a depth of around one third of its standard length with a broad head which has a tapering snout. [5] The dorsal fin has 13 spines and 12 to 14 soft rays while the anal fin has 3 spines and 6 soft rays. [1] The caudal fin is broad and rounded and the caudal peduncle is wide. [5] This species attains a maximum total length of 56 cm (22 in). [1] The overall colour of this species is dark green fading to whitish on the ventral part of the body, [6]

Distribution and habitat

Sebastes ratrelliger is found in the eastern Pacific Ocean along the western coast of North America. It ranges from Cedros Island in Baja California [5] north as far as Ucluelet on Vancouver Island in British Columbia, although they are most abundant from northern California south. [7] It is a demersal fish found at depths down to 46 m (151 ft) but are typically found in less than 15 m (49 ft). [1] This is a shallow water species in which the juveniles and adults occur on hard structures, such as reefs, and among kelp beds where there are crevices they can use as shelters. [7]

Biology

Sebastes rastreliger is a predatory species feeding on crustaceans and smaller fishes such as juvenile surfperches and midshipmen (Porichthys spp). [7] They have been found to live up to 23 years with the males and females growing at roughly the same rate and have similar maximum sizes. In southern California half the fish are sexually mature at 4 years old and a length of 23.5 cm (9.3 in), and all are sexually mature at 5 years old and at a length of 27.5 cm (10.8 in). The females bear between 80,000 and 760,000 eggs in a season and the larvae are all released simultaneously. In southerbn California breeding occurs between January and March with peaking in January. Newborn larvae are planktonic have standard lengths between 4.25 and 4.5 mm (0.167 and 0.177 in) and settle on the substrate when they reach 2.7 cm (1.1 in), appearing in shallow waters and tidal pools between spring and summer. [8] The larvae do not disperse far and the adults aree sedentary, remaining within their home range for most of their life, [6]

Fisheries

Sebastes rastrelliger is an important species in commercial and recreational fisheries. [7]

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References

  1. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.) (2021). "Sebastes rastrelliger" in 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 4 December 2021.
  3. Z. Li; M.S. Love; T. Asahida; and A.J. Gharrett (2006). "Phylogeny of members of the rockfish (Sebastes) subgenus Pteropodus and their relatives" (PDF). Canadian Journal of Zoology. 84 (4): 527–536. doi:10.1139/z06-022.
  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 2 November 2021.
  5. 1 2 3 "Grass Rockfish". Mexican Fish. 7 January 2015. Retrieved 4 December 2021.
  6. 1 2 "Grass Rockfish". Coal Oil Point reserve. Regents of the University of California. Retrieved 4 December 2021.
  7. 1 2 3 4 "Grass Rockfish". Marine Species Portal. California Department of Fish and Wildlife. Retrieved 4 December 2021.
  8. "Sebastes rastrelliger - Grass Rockfish". Aquafind. Retrieved 4 December 2021.