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Teleostei (teleosts) > 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 Ecology

Marine; bathypelagic; depth range 200 - 2250 m (Ref. 51657). Deep-water; 34°N - 31°S

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

Circumtropical in North Atlantic (3°56'N, 12°33'W and 10°21'N, 17°59'W in the eastern Atlantic). Indo-Pacific: including Japan (Ref. 599) and New Zealand (Ref. 5755). Southeast Pacific: Chile (Ref. 9068).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.9 cm SL male/unsexed; (Ref. 126117); max. published weight: 11.10 g (Ref. 126117)

Short description Morphology | Morphometrics

Dorsal spines (total): 3; Dorsal soft rays (total): 13-15; Anal spines: 1; Anal soft rays: 7 - 8. The species is characterized by the following: first gill arch with 20-22 rakers; vertebrae 29 (28-30 reported by Ebeling, 1962), abdominal vertebrae 11 (rarely, 12); two ventrolateral-oriented spurs on the haemal arch of the first caudal vertebra; D III 14-15 (rarely, III 13); P 15; soft rays in the ventral fin 7; ventral fin starts after the vertical line of the posterior margin of the pectoral fin basement (rarely, from this vertical line); anal fin starts under the last ray of the dorsal fin or just after the dorsal fin; operculum with 4 scales (Ref. 87970).

This species is caught by open-mouth nets at 4228-0 m, with original sampling done by closing-mouth nets at 1000 m (Ref. 87970).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Maul, G.E., 1990. Melamphaidae. p. 612-618. 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. 2. (Ref. 4502)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 15 July 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 3.4 - 10.6, mean 6.4 °C (based on 1720 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01175 (0.00642 - 0.02151), b=3.09 (2.93 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

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

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

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

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