Sebastolobus alascanus Bean, 1890

Shortspine thornyhead

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Scorpaeniformes \| Sebastidae \| Sebastolobinae
Synonyms	... more
Common names	Chancharro alacrán, Rocote alacrán, Chancharro alacrán, ... more

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Image of Sebastolobus alascanus (Shortspine thornyhead)

Picture by Love, M.

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AquaMaps Data sources: GBIF OBIS

Main reference

Eschmeyer, W.N., E.S. Herald and H. Hammann. 1983. (Ref. 2850)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 80.0 cm SL male/unsexed; (Ref. 559); max. published weight: 9,000 g (Ref. 56527); max. reported age: 115 years (Ref. 39395)

Environment

Bathydemersal; marine; depth range 17 - 1600 m (Ref. 50550), usually 91 - ? m (Ref. 2850)

Climate / Range

Deep-water

North Pacific: Sea of Okhotsk north to the Navarin Canyon in the Bering Sea and from Stalemate Bank and Ulm Plateau in the Aleutian Islands southeast to Cedros Island, Baja California, Mexico. Reported from Japan (Ref. 559).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 8 - 9; Anal spines: 3; Anal soft rays: 4 - 5. Head spines very strong - nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal spines present, coronal spines absent; large head and elongate body; strong spiny ridge on head; 3rd dorsal spine not much longer than 2nd, 4th or 5th; strong notch on pectoral fin (Ref. 27437). Bright red with some black on fins; gill chamber mostly pale (Ref. 27437). Caudal slightly rounded (Ref. 6885).

Very common on soft bottoms (Ref. 2850). Oviparous (Ref. 205). Eggs are extruded in floating gelatinous masses (Ref. 31279). Have a thick glandular tissue on posterior margin of fin spines which is believed to be venomous (Ref. 57406). Rarely taken by game fishers (Ref. 27436). Flesh sweeter than that of other rockfishes (Ref. 27436).


IUCN Red List Status (Ref. 57073)	Threat to humans
Endangered (EN) (A2d)	Venomous (Ref. 57406)

Human uses
Fisheries: minor commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Very Low, minimum population doubling time more than 14 years (tmax: 115 (validated age: 62 yrs).)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High to very high vulnerability (70 of 100)	Very high

Entered by Froese, Rainer

Modified by Ortañez, Auda Kareen

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