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Teleostei (teleosts) > Stomiiformes (Lightfishes and dragonfishes) > Stomiidae (Barbeled dragonfishes) > Melanostomiinae
Etymology: Pachystomias: Greek, pachys = fat + Greek, stoma = mouth (Ref. 45335).
More on author: Günther.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathypelagic; depth range 660 - 4000 m (Ref. 74511). Deep-water; 50°N - 37°S, 65°W - 154°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: scattered records from 50°N-31°N, then between 16°N-18°S and from 28°S-37°S but not taken close to the continent south of the equator. Western Atlantic: scattered records from 40°N-13°N. Also known from the Indian and Pacific oceans. South China Sea (Ref.74511).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 22.1 cm SL male/unsexed; (Ref. 4468)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 20 - 24; Anal spines: 0; Anal soft rays: 23 - 28. Body moderately elongated, slightly compressed. Snout shorter than eye. Jaws slender, gape slightly curved upward. Barbel slender, tapering without a bulb. Velvety dark brown to black (Ref. 37473).

Meso- (Ref. 27000) and bathypelagic (Ref. 58302).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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)

Least Concern (LC) ; Date assessed: 20 May 2013

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
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Distribution
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Anatomy
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Physiology
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Visual pigment(s)
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Stamps, coins, misc.

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Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 2.3 - 5.4, mean 3.3 °C (based on 2272 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00302 (0.00117 - 0.00783), 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): 4.2 ±0.73 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (17 of 100).

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