Actinopteri (ray-finned fishes) > Argentiniformes
(Marine smelts) > Bathylagidae
Etymology: Bathylagus: Greek, bathys = deep + Greek, lagos = hare (Ref. 45335). More on authors: Goode & Bean.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 500 - 3237 m (Ref. 58018), usually - m (Ref. ). Deep-water; 0°C - ; 70°N - 35°N, 75°W - 2°W
Eastern Atlantic: Iceland, Faeroes and Shetlands to Portugal. Probably antitropical and present in other oceans. Northwest Atlantic: Canada (Ref. 5951).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.0 cm TL male/unsexed; (Ref. 123983)
soft rays: 16 - 19. Body robust and compressed. Small gill opening. Anal fin base longer than the length of the caudal peduncle. Dark pigment on the scale pockets (Ref. 37473).
Bathypelagic (Ref. 58426). Sometimes caught in large aggregations. Eggs and larvae are pelagic (Ref. 6345). Feeds on small crustaceans (Ref. 5951).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Cohen, D.M., 1984. Bathylagidae. p. 392-394. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean, Volume 1. Unesco, Paris. (Ref. 6345)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 3.3 - 5.8, mean 3.9 °C (based on 372 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00205 - 0.01282), b=3.00 (2.79 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.38 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (42 of 100) .