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Centrarchiformes (Basses) >
Oplegnathidae (Knifejaws)
Etymology: Oplegnathus: Greek, hoplon = weapon + Greek, gnathos = jaw (Ref. 45335).
Eponymy: Peão Lopes of the Lourenco Marques Museum was described as “…a most able collector and technician”. He collected eight of the records of fishes in or near Delagoa Bay that Smith discussed in his paper, presumably including the knifejaw holotype. (Ref. 128868), visit book page.
More on author: Smith.
Environment: milieu / climate zone / Tiefenbereich / distribution range
Ökologie
seewasser riff-verbunden; tiefenbereich 20 - 130 m. Tropical
Western Indian Ocean: Delagoa Bay in Mozambique northwards (Ref. 4387), but the northern limit of its range in not known (Ref. 9660).
Size / Gewicht / Alter
Geschlechtsreife: Lm ? range ? - ? cm
Max length : 75.0 cm TL Männchen/unbestimmt; (Ref. 9660); common length : 50.0 cm TL Männchen/unbestimmt; (Ref. 9660)
Rückenflossenstacheln (insgesamt) : 11; Rückenflossenweichstrahlen (insgesamt) : 20 - 21; Afterflossenstacheln: 3; Afterflossenweichstrahlen: 16. Adults dark bronzy brown in color.
Body shape (shape guide): short and / or deep.
Inhabits reef areas and feeds on benthic invertebrates.
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Heemstra, P.C., 1984. Oplegnathidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing area 51). Vol. 3, FAO, Rome. (Ref. 9660)
IUCN Rote Liste Status (Ref. 130435: Version 2025-1)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: kommerziell
Tools
Zusatzinformationen
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Estimates based on models
Preferred temperature (Ref.
123201): 22.9 - 26.6, mean 25.6 °C (based on 16 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.37 se; based on food items.
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
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