Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Stomiiformes (Lightfishes and dragonfishes) >
Stomiidae (Barbeled dragonfishes) > Melanostomiinae
Etymology: Eustomias: Greek, eu = good + Greek, stoma = mouth (Ref. 45335); mesostenus: From the constricted terminal bulb of this species.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 0 - 1643 m (Ref. 11333). Deep-water
Eastern Indian Ocean. High Seas only.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.5 cm SL male/unsexed; (Ref. 11333)
Dorsal soft rays (total): 24; Anal soft rays: 34; Vertebrae: 67. A single, very long terminal bulb, its length more than twice its greatest width, constricted at its midlength, with a short, very slender terminal projection included in a broad distal extension of the outer covering membrane of the bulb. Bulb and projection combined 3.2% SL. Barbel short, 42.5% SL. Axis of stem unpigmented. External chevron-shaped or roundish striated areas unpigmented, becoming almost contiguous distally. No inclusions in stem. Middorsal paired spots between occiput and dorsal-fin origin 9 (Ref. 11333).
Body shape (shape guide): elongated.
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. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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