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> Beryciformes (Sawbellies) > Melamphaidae (Bigscale fishes or ridgeheads)
Etymology: Melamphaes: Greek, melan, -anos = black + Greek, amphi = both side (Ref. 45335); pachystomus: The species name pachystomus (Greek) means "stout", which indicates the body shape of this species (Ref. 87970).

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

marin bathypélagique; profondeur 900 - 1000 m (Ref. 87970). Deep-water; 7°S - 8°S, 80°W - 81°W

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Southeast Pacific: Peruvian coast.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 7.2 cm SL mâle / non sexé; (Ref. 87970)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 3; Rayons mous dorsaux (Total) : 14 - 15; Épines anales: 1; Rayons mous anaux: 8; Vertèbres: 28 - 29. The species is characterized by the following: first gill arch with 22 rakers; total vertebrae 28-29, 11 abdominal and the haemal arch of the first caudal vertebra is without a spur; D III,14-15; P15; ventral fin with 7 soft rays; ventral fin starts under the vertical line of the posterior margin of the pectoral fin basement; anal fin starts after the vertical line of the last ray of the dorsal fin; operculum with 4 scales (Ref. 87970).

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Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Kotlyar, A.N., 2011. Revision of genus Melamphaes (Melamphaidae). II. Multi-raker species: M. polylepis, M. falsidicus sp. nova, M. pachystomus sp. nova, M. macrocephalus, M. leprus. J. Ichthyol. 51(8):658-661. (Ref. 87970)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Données manquantes (DD) ; Date assessed: 30 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO - Publication: search | FishSource |

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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=0.01096 (0.00451 - 0.02668), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.5 ±0.2 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Melamphaes pachystomus Kotlyar, 2011