Actinopteri (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Stomiidae
(Barbeled dragonfishes) > Melanostomiinae
Etymology: Eustomias: Greek, eu = good + Greek, stoma = mouth (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 0 - 3000 m (Ref. 11333). Deep-water; 40°N - 25°N
Western Central Atlantic.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.7 cm SL male/unsexed; (Ref. 11333); 15.0 cm SL (female)
Morphology | Morphometrics
soft rays: 35 - 42. Two terminal bulbs separated by a long interspace (usually 2-3 times length of distal bulb, but up to 7.5 times in some small specimens). Barbel 60-85% SL in over 10 cm specimens. Terminal filament long, rarely with 1 or 2 short branches. Distal bulb usually 1-1.6 times length of proximal bulb (0.5-2 times in small specimens). Axis of stem pigmented, usually dark. External chevron-shaped or striated areas on stem usually pigmented in specimens larger than 8 cm. Paired dorsal spots between occiput and dorsal-fin origin usually 9, sometimes 7 (Ref. 11333).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gibbs, R.H. Jr., T.A. Clarke and J.R. Gomon, 1983. Taxonomy and distribution of the stomioid fish genus Eustomias (Melanostomiidae), I: subgenus Nominostomias. Smithson. Contrib. Zool. 380:139 p. (Ref. 11333)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 4.6 - 13.7, mean 8.7 °C (based on 78 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
): 4.2 ±0.73 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low vulnerability (25 of 100) .