Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển Tầng nổi biển sâu; Mức độ sâu 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.).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL con đực/không giới tính; (Ref. 6622)
Các tia vây lưng cứng (tổng cộng) : 0; Các vây lưng mềm (tổng cộng) : 26 - 29; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 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 | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng
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
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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).
Mức dinh dưỡng (Ref.
69278): 3.5 ±0.48 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).