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

Teleostei (teleosts) > Perciformes/Cottoidei (Sculpins) > Rhamphocottidae (Grunt sculpins)
Etymology: Rhamphocottus: Greek, rhamphos = bill, peak + Greek, kottos = a fish without identificaction (Ref. 45335); richardsonii: Named after John Richardson, naturalist and explorer (Ref. 6885).
More on author: Günther.

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

Marine; demersal; depth range 0 - 165 m (Ref. 2850). Temperate; 66°N - 32°N

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

North Pacific: Japan to Alaska and at least Santa Monica Bay, southern California, USA.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 8.9 cm TL male/unsexed; (Ref. 48784)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7 - 8; Dorsal soft rays (total): 12 - 13; Anal spines: 0; Anal soft rays: 6 - 7. Caudal fin well rounded.

Inhabits intertidal areas and to 165 m depth, in tide pools and rocky areas but also sand bottoms (Ref. 2850). Frequently observed taking shelter in empty shells, including those of the giant barnacle, Balanus nubilis, and discarded bottles and cans (Ref. 48784). Young feed on zooplankton and invertebrate and fish larvae; adults feed also feed on crustaceans (Ref. 28499). May use its pectoral fins to crawl over rocks and seaweed (Ref. 6885).

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

A female chases a male into a rock crevice. She keeps him there until she lays her eggs (Ref. 28499).

Main reference Upload your references | References | Coordinator | Collaborators

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Publ. (20):183 p. (Ref. 3814)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 14 December 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquarium: public aquariums

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators

Ecology
Ecology

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvae
Larval dynamics

Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos

Anatomy
Gill areas
Brains
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetics
Electrophoreses
Heritabilities

Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.

Outreach
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Taxonomy
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Synonyms
Morphology
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References
References

Tools

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Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 4.7 - 15.9, mean 8.9 °C (based on 558 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±0.37 se; based on food items.

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Price category (Ref. 80766): Unknown.

Rhamphocottus richardsonii Günther, 1874