Teleostei (teleosts) > 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; benthopelagic; depth range 0 - 200 m (Ref. 58018). Tropical
Western Central Atlantic: northern Gulf of Mexico, Straits of Florida, and off the Guianas.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 16.4 cm SL male/unsexed; (Ref. 37039)
Morphology | Morphometrics
soft rays: 33 - 40;
Vertebrae: 64 - 66. Body color black; depth 8.8% SL; head length 13.5% SL. Lower jaw about as long as upper jaw and is not upturned at tip. Chin barbel 11-47% SL. Barbel with slender stem and 2 terminal bulbs separated by distance 1.2-3.7% SL. Distal bulb 0.5-1.5% SL (about same size as proximal bulb); ovoid but not bilobate; lacks terminal filament. No deep ventral groove on belly. Pectoral fin 2 free rays.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McEachran, J.D. and J.D. Fechhelm, 1998. Fishes of the Gulf of Mexico. Volume 1: Myxiniformes to Gasterosteiformes. University of Texas Press, Austin. 1112p. (Ref. 37039)
IUCN Red List Status (Ref. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 20 - 27.5, mean 24.7 °C (based on 221 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00121 - 0.00787), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 4.2 ±0.73 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).