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
Ecology
Marine; bathypelagic; depth range 0 - 1900 m (Ref. 11333). Subtropical; 2°S - 31°S
Eastern Atlantic: 3°S to 8°S between 4° and 9°W. Western Atlantic: off Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.0 cm SL male/unsexed; (Ref. 11333); 16.5 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 25; Anal soft rays: 36; Vertebrae: 69. A single terminal bulb, more than twice its width, with a single, digitate terminal projection 40-110% of bulb length. Bulb and projection combined 2-3.4% SL. Barbel 28-41% SL in small specimens, 60-76% SL in those over 85 cm SL. Axis of stem well pigmented. External chevron-shaped or roundish striated areas unpigmented, closely spaced or contiguous distally, but often obscured distally by inclusions. Spherical or granular inclusions present in distal half of stem, small and widely-spaced proximally, becoming large and crowded distally; inclusions not well developed in specimens smaller than about 10 cm SL. Middorsal paired spots between occiput and dorsal-fin origin 8 (Ref. 11333).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gibbs, R.H. and M.A. Barnett, 1990. Melanostomiidae. p. 308-337. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4468)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
Special reports
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Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 4.9 - 10.4, mean 5.9 °C (based on 7 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).
Trophic level (Ref.
69278): 4.3 ±0.8 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).
