Actinopterygii (ray-finned fishes) > Osmeriformes
(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 125 - ? m (Ref. 58018), usually 200 - 300 m (Ref. 33679). Deep-water; 23°N - 18°S
Indo-West Pacific: Indonesia (Ref. 5978). Also known in tropical Atlantic.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm SL male/unsexed; (Ref. 4459)
Morphology | Morphometrics
soft rays: 15 - 16. Deep body, evenly narrowed toward the end of caudal peduncle. Maximum depth slightly about level of pectoral fin base for 2.37-8.15 cm specimens. Caudal peduncle short and narrow. Pectorals short, not reaching origin of dorsal fin. Radial pattern on operculum present. Gill rakers on the inner surface of epibranchial of first gill arch (Ref. 33679).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Cohen, D.M., 1990. Bathylagidae. p. 239-240. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4459)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 11 - 20, mean 13.4 (based on 154 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00221 - 0.01367), b=2.98 (2.76 - 3.20), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (39 of 100) .