Classification / Names
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Beryciformes (Sawbellies) >
Melamphaidae (Bigscale fishes or ridgeheads)
Etymology: Melamphaes: Greek, melan, -anos = black + Greek, amphi = both side (Ref. 45335); xestoachidus: The species name xestoachidus comes from Greek "smooth spined" and indicates the absence of a spur on the haemal arch of the first caudal vertebra (Ref. 87971).
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin bathypélagique; profondeur 2400 - 3450 m (Ref. 87971). Deep-water
Northwestern Pacific Ocean, eastwards of the Kurils Islands.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 8.7 cm SL mâle / non sexé; (Ref. 87971)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
The species is characterized by 22–23 rakers on the first gill arch, 30 vertebrae (12 abdominal vertebrae), the haemal arch of the first caudal vertebra is without a spur; D III 14–15; P 16; seven soft rays in the ventral fin; ventral fin starts from the vertical line of the posterior margin of the pectoral fin basement; the anal fin starts from the vertical line of the last ray of the dorsal fin; eight scales are on the operculum (Ref. 87971).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
Kotlyar, A.N., 2011. Revision of genus Melamphaes (Melamphaidae). I. Multi-raker species: M. lugubris, M. xestoachidus sp. nova, M. microps, M. manifestus sp. nova. J. Ichthyol. 51(8):557-568. (Ref. 87971)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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): 3.6 ±0.2 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
