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Myoxocephalus jaok (Cuvier, 1829)

Plain sculpin
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Myoxocephalus jaok
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Russian Federation country information

Common names: Kerchak-yaok, бычок-яок, керчак-яок
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in northern Primor'ye shelf (Ref. 45905).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rs.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Allen, M.J. and G.B. Smith, 1988
National Database:

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Perciformes/Cottoidei (Sculpins) > Cottidae (Sculpins)
Etymology: Myoxocephalus: Greek, myos = muscle, and also, mouse + Greek, kephale = head (Ref. 45335).
  More on author: Cuvier.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 0 - 680 m (Ref. 50550), usually ? - 80 m (Ref. 43939).   Temperate

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

North Pacific: Chukchi Sea to Bearing Sea, eastern Aleutian Is., and Gulf of Alaska to Kachemak Bay, Cook Inlet; SE Alaska at Limestone Inlet; to Okhotsk and Japan seas as far as northern North Korea.

Length at first maturity / Size / Weight / Age

Maturity: Lm 47.0, range 43 - 51 cm
Max length : 74.0 cm TL male/unsexed; (Ref. 56527); max. published weight: 8.0 kg (Ref. 56527)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 8 - 10; Dorsal soft rays (total): 14 - 17; Anal spines: 0; Anal soft rays: 13 - 15. Head depressed, with bony spines and ridges dorsally (Ref. 559). Rounded bony plates bearing serrated margin present on dorsolateral surface of body (Ref. 559).

Biology     Glossary (e.g. epibenthic)

Found in shallow waters (Ref. 2850), on sand and mud bottoms from intertidal zone to depths often not greater than 80 m; seldom caught deeper than 150 m (Ref. 43939).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Mecklenburg, C.W., T.A. Mecklenburg and L.K. Thorsteinson, 2002. Fishes of Alaska. American Fisheries Society, Bethesda, Maryland. xxxvii +1037 p. (Ref. 43939)

IUCN Red List Status (Ref. 130435)


CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: of no interest
FAO(Publication : search) | FishSource |

More information

Trophic ecology
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Diet compositions
Food consumptions
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Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(genus, species) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): -0.4 - 6.9, mean 2.4 (based on 1768 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00371 - 0.01290), b=3.10 (2.93 - 3.27), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.3 se; based on diet studies.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Assuming Fec=10-100).
Fishing Vulnerability (Ref. 59153):  High vulnerability (56 of 100).