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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 Ecologia

marino batipelagico; distribuzione batimetrica 900 - 1000 m (Ref. 87970). Deep-water; 7°S - 8°S, 80°W - 81°W

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Southeast Pacific: Peruvian coast.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.2 cm SL maschio/sesso non determinato; (Ref. 87970)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 3; Raggi dorsali molli (totale) : 14 - 15; Spine anali: 1; Raggi anali molli: 8; Vertebre: 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).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

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)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 30 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori

Ecology
Ecologia

Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
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Recruitments
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Life cycle
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Maturities
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Egg(s)
Egg developments
Larve
Dinamica popolazioni larvali

Distribution
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Aree FAO
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Anatomy
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Cervelli
Otoliths

Physiology
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Oxygen consumptions
Swimming type
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Visual pigment(s)
Suoni dei Pesci
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Toxicities (LC50s)

Genetics
Genetica
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Profili di acquacoltura
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Stamps, coins, misc.

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References
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Fonti Internet

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).

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

Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).

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

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Melamphaes pachystomus Kotlyar, 2011