Actinopterygii (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Stomiidae
(Barbeled dragonfishes) > Melanostomiinae
Etymology: Eustomias: Greek, eu = good + Greek, stoma = mouth (Ref. 45335); cryptobulbus: Named in reference to its partially hidden (by dorsal pigment patch and semi-opaque sheath) terminal bulb (Ref. 45801).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 0 - 975 m (Ref. 45801). Deep-water
Indo-Pacific: known from two stations in the Indian Ocean and from many areas throughout the Pacific. Also known from four stations in the southeast Atlantic.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.9 cm SL male/unsexed; (Ref. 45801); 16.5 cm SL (female)
Morphology | Morphometrics
Barbel with three slender, unpigmented branches arising together from stem; all three reaching to or well beyond barbel tip; barbel stem pigmented externally up to origin of branches; only axis of distal part of stem pigmented except for an elongate, often distally forked, patch of external pigment extending dorsally from distal section of stem almost to distal tip of terminal bulb; bulb elongate, its length well over two times in its thickness; medial and lateral terminal filaments arising from unpigmented bulb tip (Ref. 45801).
Epi- and mesopelagic with most captures above 225 m fishing depths (Ref. 58302).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Clarke, T.A., 2001. Pelagic fishes of the genus Eustomias, subgenus Dinematochirus (Stomiidae), in the Indo-Pacific with the description of twelve new speices. Copeia 2001(3):683-699. (Ref. 45801)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 9.7 - 22.1, mean 15.4 (based on 335 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
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (26 of 100) .