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Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Malacocephalus: Greek, malakos = soft + Greek, kephale = head (Ref. 45335); boretzi: Named for L.A. Borets (TINRO) (Ref. 33732).
Environment: milieu / climate zone / depth range / distribution range
Ecología
marino bentopelágico; rango de profundidad 270 - 290 m (Ref. 40966). Deep-water
Northwest Pacific (Ref. 40966) and Northeast Pacific (Ref. 58302).
Tamaño / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 47.0 cm TL macho / no sexado; (Ref. 33732)
Espinas dorsales (total) : 2; Radios blandos dorsales (total) : 9 - 11; Radios blandos anales: 17 - 20. Pectoral fin long. Teeth small, conical, numerous, with fang-shaped teeth on dentary. Luminous organ a small roundish anterior leathery lens, located in a deep pit . Few rows of scales separated from periproct and scale covered skin within the limits of periproct which is not separated from the latter by processes. Luminous gland with about 10 muscular cords located on its dorsal surface. Abdominal vertebrae 12-13 (Ref. 33732).
Life cycle and mating behavior
Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva
Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990. FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fish. Synop. 125(10). Rome: FAO. 442 p. (Ref. 1371)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Ref.
123201): 5.2 - 6.5, mean 5.7 °C (based on 12 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00431), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Ref.
69278): 3.8 ±0.4 se; based on size and trophs of closest relatives
Resiliencia (Ref.
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (37 of 100).