Actinopteri (ray-finned fishes) > Scombriformes
(Mackerels) > Bramidae
Etymology: Brama: Old French, breme, bresme = a fresh water fish; 1460 (Ref. 45335); japonica: Named after Japan, its type locality (Ref. 6885). More on author: Hilgendorf.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 271 - 620 m (Ref. 50610). Subtropical; 9°C - 21°C (Ref. 33866); 66°N -
Pacific Ocean: Japan to Bering Sea, and south to Peru. Reported from the Philippines (Ref. 6956) and Taiwan (Ref. 5193). Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 30 - 42 cm
Max length : 61.0 cm TL male/unsexed; (Ref. 2850); max. published weight: 2.7 kg (Ref. 56527); max. reported age: 9 years (Ref. 56527)
soft rays: 27 - 30. Dorsal and anal fins in adults with scales, without basal sheath of scales, and not fully depressible Interorbital space in adults strongly convex, the profile notably arched. Scales on caudal peduncle forming a graded size series with those on the bases of the midcaudal peduncle rays.
Oceanic species which occurs near the surface (Ref. 2850). Feeds on crustaceans (amphipods and euphausiids), small fishes and squid (Ref. 4563). Rarely caught inshore (Ref. 2850). Good food fish (Ref. 6885).
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. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 3.2 - 13, mean 9.4 °C (based on 240 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01778 (0.00920 - 0.03437), b=2.95 (2.77 - 3.13), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 4.4 ±0.3 se; based on diet studies.
Generation time: 5.9 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=4).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (51 of 100) .