Denmark country information

Common names: Grå knurhane, Graa knùrhane
Occurrence: native
Salinity: brackish
Abundance: common (usually seen) | Ref: Muus, B.J. and P. Dahlstrøm, 1989
Importance: commercial | Ref: FAO, 1992
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in all the waters around Denmark (Ref. 6302). Also in Ref. 9900.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/da.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Hureau, J.-C., 1986
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Scorpaeniformes (Scorpionfishes and flatheads) > Triglidae (Searobins) > Triglinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Тригла серая (=морской петух), Grondin gris, Borracho, ... more

Main reference

Bauchot, M.-L. 1987. (Ref. 3397)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 60.0 cm TL male/unsexed; (Ref. 3397); common length : 30.0 cm TL male/unsexed; (Ref. 4697); max. published weight: 956.00 g (Ref. 41256)

Length at first maturity
L_m 18.8, range 24 - ? cm

Environment

Marine; brackish; demersal; depth range 10 - 340 m (Ref. 56504), usually 10 - 150 m (Ref. 35388)

Climate / Range

Temperate, preferred 6°C (Ref. 107945); 71°N - 21°N, 49°W - 42°E

Distribution

Eastern Atlantic: Norway to Morocco, Madeira, Iceland (Ref. 2723), including Greenland (Ref. 115160). Also known from the Mediterranean and Black Sea (Ref. 4697).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Head large without deep occipital groove. Vertebrae 37-39 (11-13 precaudal and 25-27 caudal).

Common on sandy grounds, sometimes on rocky bottoms, and also on mud between coastline to 140 m depth. Up to depth of 340 m in the eastern Ionian Sea (Ref. 56504). Feeds on crustaceans, mostly shrimps and shore crabs; fishes, mostly gobies, flatfish, young herring and sand eels. Makes croaking sounds (Ref. 9987). Utilized fresh and frozen; eaten fried and baked (Ref. 9987).

IUCN Red List Status (Ref. 115185)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

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

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.9 ±0.0 se; Based on diet studies.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.16; tm=3-4; tmax=16; Fec=200,000)

Vulnerability (Ref. 59153)
Low to moderate vulnerability (30 of 100)

Price category (Ref. 80766)
High

Eutrigla gurnardus (Linnaeus, 1758)