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Aulopiformes (Grinners) >
Omosudidae (Hammerjaws)
Etymology: Omosudis: Greek, omo = shoulder + Latin, sudis = esox, fish of the Rhine, cited by Plinius 9.15; it also means "stake" (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin bathypélagique; profondeur 0 - 4000 m (Ref. 38732), usually 100 - 1000 m (Ref. 7344). Deep-water; 40°N - 40°S
Worldwide in tropical and temperate waters. South China Sea and East China Sea (Ref.74511)
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 23.0 cm SL mâle / non sexé; (Ref. 4475); common length : 20.0 cm NG mâle / non sexé; (Ref. 5755)
Épines dorsales (Total): 0; Rayons mous dorsaux (Total): 9-12; Épines anales 0; Rayons mous anaux: 14 - 16. Brownish above, sides silvery, iridescent, with black peritoneum showing through (Ref. 7344).
Meso- and bathypelagic at 700-1830 m (Ref. 58302). Probably swift swimmers, which can avoid nets, captured singly or in small groups (Ref. 6692). Carnivorous, feed on squids and pelagic fishes (Ref. 6692). Oviparous and are synchronous hermaphrodites (Ref. 84733).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Are synchronous hermaphrodites, gonads consist of clearly defined and well separated ovarian and testicular regions with no indication of sequential maturation of the sex products (Ref. 84733). Also Ref. 103751.
Post, A., 1984. Omosudidae. p. 496-497. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean. UNESCO, Paris. Vol. 1. (Ref. 6692)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Plus d'informations
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Estimates based on models
Preferred temperature (Ref.
123201): 4.8 - 21.3, mean 10.5 °C (based on 2379 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 4.3 ±0.64 se; based on food items.
Résilience (Ref.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Assuming tm=2-4).
Fishing Vulnerability (Ref.
59153): Low vulnerability (18 of 100).
