Actinopteri (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Stomiidae
(Barbeled dragonfishes) > Melanostomiinae
Etymology: Eustomias: Greek, eu = good + Greek, stoma = mouth (Ref. 45335). More on author: Beebe.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range - m (Ref. ), usually - m (Ref. ). Deep-water; 0°C - ; 40°N - 20°S
Atlantic, Indian and Pacific: 40-20°N and 80-30°W in the North Atlantic; near 20°S and 30°W in the South Atlantic; near Hawaii and scattered locations in the western and southern Pacific; two stations in the southern Indian Ocean.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 12 - 13.3 cm
Max length : 14.9 cm SL male/unsexed; (Ref. 36852); 17.7 cm SL (female)
Morphology | Morphometrics
Barbel with three branches arising from stem; medial branch shorter than lateral branches but all similar in structure; external pigment present on barbel stem and dorsal surface of terminal bulb except for unpigmented tip; distal boundary of pigment irregular and forked dorsally; terminal bulb with a single or a single-based group of three to six terminal filaments near distal tip.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300)
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
): 2 - 2.2, mean 2.1 °C (based on 26 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.8 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (28 of 100) .