Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Stomiidae
(Barbeled dragonfishes) > Melanostomiinae
Etymology: Eustomias: Greek, eu = good + Greek, stoma = mouth (Ref. 45335); melanostigmoides: From the basic similarity of its barbels with melanostigma.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 0 - 900 m (Ref. 11333). Deep-water
Eastern Central Pacific: off Oahu, Hawaiian Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.5 cm SL male/unsexed; (Ref. 11333); 16.5 cm SL (female)
Morphology | Morphometrics
soft rays: 39;
Vertebrae: 68. Two terminal bulbs separated by an interspace, 1.2-2.4 times the length of distal bulb. Barbel length mostly 31-71% SL in specimens less than 8 cm; 67-91% SL in larger ones. Terminal filaments short, 4-6 without prominent bulblets, arising together from distal bulb or from a short distal stem; 1 filament thicker and longer than others. Pigment in filament axes variably present or absent. Distal bulb spheroidal to ovoid, not much longer than wide, 1.5-4.3 times proximal-bulb length. Axis of stem usually lightly pigmented, between bulbs unpigmented or lightly pigmented; dark spot present or not at proximal end of distal bulb. External chevron-shaped or roundish striated areas on stem unpigmented. Middorsal paired spots between occiput and dorsal-fin origin 8, sometimes 9 (Ref. 11333).
Mesopelagic (Ref. 58302).
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. 119314)
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
): 5.8 - 15.2, mean 8.9 (based on 6 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. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (26 of 100) .