Classification / Names
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Stomiiformes (Lightfishes and dragonfishes) >
Stomiidae (Barbeled dragonfishes) > Melanostomiinae
Etymology: Eustomias: Greek, eu = good + Greek, stoma = mouth (Ref. 45335); inconstans: From the presence or absence of a second terminal bulb of the barbel (= changeable).
Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina batypelagisk; djupintervall 0 - 1100 m (Ref. 11333). Deep-water
Eastern Central Pacific: off Oahu, Hawaii.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 16.4 cm SL hane/ej könsbestämd; (Ref. 11333); 16.2 cm SL (female)
Mjukstrålar i ryggfenan (totalt) : 25; Mjukstrålar i analfenan: 40; Ryggkotor: 69. Species either with 1 or 2 single terminal bulbs. Barbel 52-65% SL. Terminal filament short, without branches, 3-9% SL. Distal (or only) bulb 2.6-3.6 times length of small proximal bulb, when present. Axis of stem and filament pigmented. External chevron-shaped or rounded striated areas on stem pigmented or not. Middorsal paired spots between occiput and dorsal-fin 8 (Ref. 11333).
Mesopelagic (Ref. 58302).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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)
Threat to humans
Harmless
Human uses
Fiskeri: saknar intresse
Verktyg
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Estimates based on models
Preferred temperature (Ref.
123201): 5.7 - 15.2, mean 8.7 °C (based on 5 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Trofisk nivå (Ref.
69278): 4.3 ±0.8 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Assuming tmax>3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).