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Brosme brosme  (Ascanius, 1772)

Tusk
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| Native range | All suitable habitat | PointMap | Year 2050 |
This map was computer-generated and has not yet been reviewed.
Brosme brosme   AquaMaps   Data sources: GBIF OBIS
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Image of Brosme brosme (Tusk)
Brosme brosme
Picture by Østergaard, T.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Gadiformes (Cods) > Lotidae (Hakes and burbots)
Etymology: Brosme: Greek, brosomai, bibrosko = to eat up, to devour (Ref. 45335).

Environment / Climate / Range Ecology

Marine; demersal; oceanodromous (Ref. 51243); depth range 18 - 1000 m (Ref. 1371), usually 18 - 549 m (Ref. 1371).   Temperate; 83°N - 37°N, 75°W - 57°E (Ref. 1371)

Length at first maturity / Size / Weight / Age

Maturity: Lm 47.1, range 50 - ? cm
Max length : 120 cm TL male/unsexed; (Ref. 9988); common length : 50.0 cm TL male/unsexed; (Ref. 1371); max. published weight: 30.0 kg (Ref. 9988); max. reported age: 20 years (Ref. 1371)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 93-103; Anal soft rays: 62 - 75; Vertebrae: 64 - 67. Barbel on present on chin, none on snout, its length equal to eye diameter. Color is variable; dorsally dark red-brown or green brown to yellow shading into pale color on belly. Young specimens may have six transverse yellow bands on sides. Vertical fins with dark margin rimmed with white.

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

Northwest Atlantic: New Jersey to the Strait of Belle Isle and on the Grand Banks of Newfoundland. Rare at the southern tip of Greenland. Northeast Atlantic: off Iceland, in the northern North Sea, and along the coast of Scandinavia to the Murmansk Coast and at Spitzbergen.

Biology     Glossary (e.g. epibenthic)

Found in small shoals on rough, rock, gravel, or pebble bottoms. Generally keeps far from the shore, near the bottom, mostly between 150 and 450 m in the northeastern Atlantic, and between 18 and 550 m in the northwestern Atlantic. Occurs at a temperature range of 0°-10° C (Ref. 9988). Solitary or in small groups. Feeds on crustaceans and shellfishes, benthic fishes (flatfishes and gurnard) and even on starfishes. Preyed upon by seals (Ref. 9988). Sold fresh, frozen as fillets or dried salted. Eaten steamed, fried, broiled, boiled, microwaved and baked (Ref. 9988).

Main reference Upload your references | References | Coordinator | Collaborators

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)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: highly commercial; gamefish: yes
FAO(fisheries: production, species profile; publication : search) | FIRMS (Stock assessments) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00234 - 0.00933), b=3.13 (2.95 - 3.31), based on LWR estimates for species & Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.0   ±0.4 se; Based on diet studies.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (K=0.08-0.16; tm=8-10; tmax=20; Fec=2 million).
Vulnerability (Ref. 59153):  High vulnerability (65 of 100) .
Price category (Ref. 80766):   Low.