You can sponsor this page

Hemitripterus villosus (Pallas, 1814)

Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Hemitripterus villosus   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
 Pictures | Videos | Google image
Image of Hemitripterus villosus
Hemitripterus villosus
Picture by Markevich, A.I.

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

Teleostei (teleosts) > Perciformes/Cottoidei (Sculpins) > Agonidae (Poachers) > Hemitripterinae
Etymology: Hemitripterus: Greek, hemi = half + Greek, tres, tria = three + Greek, pteron = wing, fin (Ref. 45335).
More on author: Pallas.

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

Marine; demersal; depth range 0 - 550 m (Ref. 50550). Temperate; 66°N -

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

Northwest Pacific: Karaginskiy and Commander islands, Bering Sea to Okhotsk and Japan seas; one record from the western Gulf of Alaska.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm SL male/unsexed; (Ref. 559)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 17 - 19; Dorsal soft rays (total): 11 - 13; Anal spines: 0; Anal soft rays: 12 - 15. Body covered with many small tubercles; head large, with numerous bony humps and ridges; spinous dorsal fin deeply emarginate, its base longer than that of the soft dorsal fin; jaws, prevomer and palatines with broad bands of conical teeth (Ref. 559).

Biology     Glossary (e.g. epibenthic)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Spawn in the calcareous deposits of colonies of the polychaeta, Salmacinasp. which makes them more of 'cavity spawners' than 'spawners in live vertebrate' (Ref. 34819, 26281).

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435: Version 2024-2)

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Gamefish: yes
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos
Anatomy
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genetics
Heterozygosity
Heritability
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Morphometrics
Pictures
References
References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 0.9 - 11, mean 4.7 °C (based on 411 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6289   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00500 - 0.02405), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  4.3   ±0.4 se; based on diet studies.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (33 of 100).