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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

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Eastern Indian Ocean. High Seas only.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 9.5 cm SL male/unsexed; (Ref. 11333)

Short description Identification keys | Morphology | Morphometrics

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).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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 2024-2)

Data deficient (DD) ; Date assessed: 19 July 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00302 (0.00116 - 0.00786), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±0.7 se; based on size and trophs of closest relatives

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).

Eustomias mesostenus Gibbs, Clarke & Gomon, 1983