Actinopteri (ray-finned fishes) > Argentiniformes
(Marine smelts) > Bathylagidae
Etymology: Bathylagoides: Greek, bathys = deep + Greek, lagoides = similar to a hare (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 100 - 1500 m (Ref. 33698), usually 200 - 300 m (Ref. 33679). Deep-water; 0°C - ; 22°N - 33°S
Pacific and Indian. Eastern Pacific: California Current region (Ref. 35604).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.5 cm SL male/unsexed; (Ref. 96339)
soft rays: 14 - 18;
Vertebrae: 41 - 46. Deep body, relatively slender toward the end of caudal peduncle; maximum body depth slightly anterior to origin of dorsal fin in specimens 6 - 10.45 cm SL and at the level of the pectoral fin base in smaller specimens. Pectoral fins short, far from reaching origin of dorsal fin. Radial grooves present in the hind part of operculum. Few gill rakers at the inner surface of epibranchial of the first gill arch (Ref. 33679). Branchiostegal rays: 2.
Undergoes daily vertical migrations, rising into the epipelagic zone during the night. Feeds mainly on zooplankton (Ref. 9875, 33698). Oviparous, with planktonic eggs and larvae (Ref. 35604).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gorelova, T.A. and S.G. Kobylyanskiy, 1985. Feeding of deepsea fishes of the Family Bathylagidae. J. Ichthyol. 25(3):89-100. (Ref. 33698)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: of no interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 3.3 - 12.6, mean 5 °C (based on 16 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [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
): 3.4 ±0.42 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 (38 of 100) .