Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batipelagico; distribuzione batimetrica 0 - 2100 m (Ref. 58018). Deep-water; 40°N - 40°S, 71°W - 154°W
Broadly distributed tropical and temperate species (Ref. 9927). Eastern Atlantic: off Morocco to Sierra Leone and from Angola to South Africa. Western Atlantic: Caribbean Sea (Ref. 6744); reported from Guianas (Ref. 13608). Western Indian Ocean: at about 38°S. Western Pacific: off Japan, China Sea, Arafura Sea (Ref. 9819), off Victoria, Australia (Ref. 6536) and New Zealand (Ref. 5755). Including west of Ireland, Flemish Cap, and Gulf of Maine (Moore, pers. comm.).
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL maschio/sesso non determinato; (Ref. 6622)
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 26 - 29; Spine anali: 0; Raggi anali molli: 20 - 23. Adults greyish black in color (Ref. 6622). Tip of pelvic fin reaching origin of anal fin (Ref. 13608).
Juveniles found near the surface; adults mesopelagic below 500 m (Ref. 27121). May occur at depths greater than 2,000 m (Ref. 6536). Feed on small crustaceans and planktonic organisms (Ref. 27121). Breed all year round (Ref. 6744). Minimum depth range taken from Ref. 27000.
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Post, A., 1990. Diretmidae. p. 623-624. 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. 6536)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 4.5 - 13.9, mean 8.5 °C (based on 849 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00732 - 0.03276), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.48 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).