Actinopterygii (ray-finned fishes) > Gadiformes
(Cods) > Gadidae
(Cods and haddocks)
Etymology: Trisopterus: Greek, tris = thrice + Greek, pteron = wing, fin (Ref. 45335).
Environment / Climate / Range
Marine; brackish; benthopelagic; oceanodromous (Ref. 51243); depth range 30 - 100 m (Ref. 3663). Temperate; 62°N - 25°N, 19°W - 16°E
Length at first maturity / Size / Weight / Age
Maturity: Lm 21.6, range 21 - 25 cm
Max length : 46.0 cm TL male/unsexed; (Ref. 7034); common length : 30.0 cm TL male/unsexed; (Ref. 1371); max. reported age: 4 years (Ref. 1371)
spines: 0. Chin barbel well developed. Pelvic fins with slightly elongated anterior rays. Body light brown dorsally, relatively tall, grayish on the sides becoming silvery ventrally, with four or five broad indistinct transverse bars on the sides; a dark blotch at the upper edge of the pectoral-fin base (Ref. 1371). Eye diameter as snout length. Anus lies below the middle of the first dorsal fin (Ref. 35388).
Eastern Atlantic: British Isles and Skagerrak to the African coast, including offshore islands. Also in the western Mediterranean.
Gregarious fish; immature ones often occur in large schools. Lives mostly on the outer shelf, but moves inshore to depths of 50 m or less for spawning. Feeds on benthic crustaceans but also on small fish, mollusks and polychaetes (Ref. 3663). Caught as a bycatch, used as food fish (Ref. 35388).
Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990. FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fish. Synop. 125(10). Rome: FAO. 442 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: commercial; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00774 - 0.01074), b=3.10 (3.05 - 3.15), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.7 ±0.6 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.2-0.4; tm=1-2; tmax=4; Fec=200,000).
Vulnerability (Ref. 59153
): Moderate vulnerability (44 of 100) .