Actinopterygii (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Stomiidae
(Barbeled dragonfishes) > Melanostomiinae
Etymology: Leptostomias: Greek, leptos = thin + Greek, stoma = mouth (Ref. 45335). More on authors: Regan & Trewavas.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic. Deep-water; 50°N - 35°S
Eastern Atlantic: between Ireland and the Azores; Canary Islands to South Africa but not recorded from the Gulf of Guinea. Western Atlantic: off Bermuda. Also known from northwest Pacific. Leptostomias gracilis, Leptostomias macropogon, Leptostomias longibarba, Leptostomias bermudensis, Leptostomias analis and Leptostomias leptobolus are probably synonyms of a single species (the entire complex needs a thorough study, Ref. 4468).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 32.5 cm SL male/unsexed; (Ref. 4468)
Mesopelagic species (Ref. 6808).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gibbs, R.H. Jr., 1984. Melanostomiidae. p. 341-365. 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. UNESCO, Paris. Vol. 1. (Ref. 4740)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 3.3 - 4.8, mean 4 (based on 654 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.80 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (41 of 100) .