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Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Hymenocephalus: Named for its transparent membrane-like head covering (‘‘hymen head’’) and fragile nature of head bones (Ref. 100825).
More on authors: Smith & Radcliffe.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
marino benthopelagico; distribuzione batimetrica 274 - 2081 m (Ref. 280). Deep-water
Western Central Pacific: Philippines.
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 15.5 cm TL maschio/sesso non determinato; (Ref. 98298)
Distinguished by the following characters: pelvic fin rays 8; pectoral fin rays 13-15; black-colored tips of pelvic fins; barely projecting snout; head bones are rather firm; no barbel; orbit diameter 28-33% HL; interorbital width 40-50% HW (head width); gill rakers 19-21; ventral striae reaching close to periproct; otholith length to height (OL:OH) is 1.1-1.25; total colliculum length to pseudocolliculum length (TCL:PCL) is 1.7-2.1 (Ref. 98298).
Cross section: angular.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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: Version 2025-1)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Preferred temperature (Fonte Biblio.
123201): 4.2 - 8.9, mean 6 °C (based on 700 cells).
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00214 (0.00109 - 0.00421), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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