Actinopterygii (ray-finned fishes) >
Scorpaeniformes (Scorpionfishes and flatheads) >
Sebastidae (Rockfishes, rockcods and thornyheads) > Sebastinae
Etymology: Sebastes: Greek, sebastes = august, venerable (Ref. 45335); aleutianus: Named after the Aleutian Islands in Alaska (Ref. 6885).
Environment / Climate / Range
Ecology
Marine; bathydemersal; depth range 25 - 900 m (Ref. 50610). Deep-water, preferred ?; 66°N - 32°N, 130°E - 117°W
North Pacific: Japan to Navarin Canyon in the Bering Sea (but not in the Sea of Okhotsk), throughout the Aleutian Islands, and south to San Diego, California, USA.
Length at first maturity / Size / Weight / Age
Maturity: Lm 47.0 range ? - ? cm
Max length : 97.0 cm TL male/unsexed; (Ref. 9015); max. published weight: 900.00 g (Ref. 40637); max. reported age: 205 years (Ref. 55701)
Dorsal
spines
(total): 12 - 14;
Dorsal
soft rays
(total): 14;
Anal
spines: 3;
Anal
soft rays: 6 - 8;
Vertebrae: 27. This species is distinguished by the following characters: 8 head spines strong - nasal, preocular, supraocular, postocular, tympanic, coronal, parietal and nuchal spines; 2 or more infraorbital spines; differs from S. melanostictus by having a pale body with no distinct spots on the membranes of the spinous dorsal fin; shorter dorsal-fin spine 1, 1.5?3.0 times into orbit length, 4.3?7.2% SL (vs. 1.0?1.8 times into orbit length and 5.9?9.6% SL); shorter dorsal-fin spine 4, 9.8?15.5% SL (vs. 12.0?18.4% SL); shorter and fewer gill rakers, 3.4?6.3% SL (vs. 3.9?7.1% SL) and 29?34 (vs. 30?36), respectively (Ref. 87139).
Usually found offshore (Ref. 27437). Viviparous (Ref. 34817).
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: commercial
More information
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00573 - 0.01385), b=3.11 (2.98 - 3.24), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic Level (Ref.
69278): 3.5 ±0.2 se; Based on diet studies.
Resilience (Ref.
69278): Very Low, minimum population doubling time more than 14 years (tmax=205).
Prior r = 0.11, 2 SD range = 0.05 - 0.23, log(r) = -2.21, SD log(r) = 0.36, Based on: 2 K, 3 tmax, 1 Fec records
Vulnerability (Ref.
59153): High to very high vulnerability (74 of 100) .