Common names from other countries
>
Beryciformes (Sawbellies) >
Melamphaidae (Bigscale fishes or ridgeheads)
Etymology: Melamphaes: Greek, melan, -anos = black + Greek, amphi = both side (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batipelagico; distribuzione batimetrica 62 - 500 m (Ref. 51657). Deep-water; 30°N - 23°S, 120°W - 130°W (Ref. 87970)
Eastern Pacific Ocean: tropical, endemic to ETP, from the California coast (ca. 30°N) down to northern Chilean coast (ca. 23°S).
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.8 cm SL maschio/sesso non determinato; (Ref. 87970)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 3; Raggi dorsali molli (totale) : 13 - 16; Spine anali: 1; Raggi anali molli: 8; Vertebre: 27 - 28. The species is characterized by the following: large head (more than 40% of SL, specimens of SL ? 100.0 mm); first gill arch with 20-22 rakers; total vertebrae 26-28, 11 abdominal; haemal arch of the first caudal vertebra is without a spur; D III,13-16; P14-15; ventral fin with 7 soft rays; ventral fin starts before the vertical line of the posterior margin of the pectoral fin basement; anal fin starts under the vertical line of the 3-4 ray of the dorsal fin (posterior end); operculum with 4 scales (Ref. 87970).
Adults caught below 400-500 meters; juveniles in shallower water (Ref. 51657). Specimens were sampled by open-mouth nets at depth range of 1500-0 m; the minimal sampling depth was 62 m (individuals with SL = 12.7-13.3 mm) (Ref. 87970).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
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)
CITES (Ref. 128078)
Not Evaluated
Threat to humans
Harmless
Human uses
Strumenti
Special reports
Download XML
Fonti Internet
Estimates based on models
Preferred temperature (Ref.
115969): 12.1 - 14.8, mean 13.2 (based on 26 cells).
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).
Trophic level (Ref.
69278): 3.7 ±0.2 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).