rockfish

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rockfish,

member of the family Sebastidae (rockfishes) according some authorities, but also classified as a member of the family Scorpaenidae (scorpionfishes, lionfishes, and rockfishes) by other authorities, carnivorous fish inhabiting all seas and especially abundant in the temperate waters of the Pacific. Rockfishes are found among rocks and reefs. Of commercial importance are the black and orange rockfishes and the bocaccio of the Pacific coast and the rose fish (called also redfish and red, or ocean, perch) of the Atlantic. In the West Indies are found the lionfishes (see lionfishlionfish,
common name for a genus (Pterois) of the family Scorpaenidae (see rockfish), comprising venomous subtropical marine fish native to the South Pacific, the Indian Ocean, and the Red Sea. Native to the Indian and South Pacific oceans, the red lionfish (P.
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) and the scorpionfishes, the latter vividly marked in red, blue, and green and equipped with poisonous dorsal fin spines, which have venom glands in their grooves. The name rockfish is also applied to various other fishes that frequent rocky places. The unrelated striped bass is sometimes called rockfish. Rockfishes and scorpionfishes are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Actinopterygii, order Perciformes, family Scorpaenidae or families Scorpaenidae and Sebastidae.
References in periodicals archive ?
The expected volume backscattering strength from rockfishes at 18, 70, 120, and 200 kHz is within 5 dB of the volume backscattering strength at 38 kHz (De Robertis et al., 2010).
Of those 134 prey items, no adult rockfishes were found and the contribution to total biomass by all rockfish prey was less than one percent (Steiner, 1979).
Landed catch from 1980 through 2010 shows that groundfish harvests off Washington, Oregon, and California were significantly lower (rockfishes, flatfishes, sablefish) or relatively constant (Pacific hake, thornyheads) in recent years relative to historical rates (Fig.
Additional information on these two habitat variables (food availability and substrate type) are critical for improving future distribution modeling for rockfishes throughout their ranges and improving our ability to identify trends in rockfish population abundance from bottom trawl survey data.
(2008) studied the maternal effects of rockfishes on their progeny and postulated that factors influencing the time of parturition also influenced recruitment success.
"Unidentified juvenile rockfish" (abbreviation RRF) were categorized by size (<10 cm long), not by morphological features, because video resolution and inherent difficulty of in situ identification of young-of-the-year rockfishes precludes determinations at the level of species.
In the California Current system of the eastern North Pacific, the genus Sebastes (the rockfishes) is known to be sensitive to shifts in environmental conditions associated with changes in prevailing currents.
Within the rockfishes, it is difficult to distinguish between prereproductive and mature-resting stage females during the nonreproductive season, as at both stages females exhibit small, light-colored ovaries (Love et al.
These proceedings from the September 2005 symposium contain research on these very issues and more, including several papers about the life history of species in Pacific waters, more on population structure and speciation, including several genetic studies differentiating data among rockfishes, and two papers on aging and growth including one using radiometric ages.
Specifically, in this study we have generated and phylogenetically analyzed (in the context of the Markovian speciation/extinction models) sequence data from an 855-bp segment of the mitochondrial cytochrome b gene (cyt b) in 28 species of rockfishes plus one outgroup.
Rockfishes (genus Sebastes) have been historically significant for California commercial and recreational fisheries.