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Ovalentaria/misc (Various families in series Ovalentaria) >
Opistognathidae (Jawfishes)
Etymology: Opistognathus: Greek, opisthe = behind + Greek, gnathos = jaw (Ref. 45335); to the very elongate upper jaw of the type species of the genus, Opistognathus nigromarginatus (Ref. 128653); crassus: Name from the Latin 'crassus' (thick, fat or stout), referring to the general appearance of this species..
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien; diepte 35 - 35 m (Ref. 85161). Tropical
Western Indian Ocean: Maldive Islands.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 3.6 cm SL mannelijk / geslacht onbekend; (Ref. 85161)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 11; Dorsale zachte stralen (totaal) : 11; Anale stekels: 2; Anale zachte stralen: 10; Wervels: 26. This species is distinguished by the following set of characters: rigid maxilla with no flexible lamina posteriorly; D XI,11; A II,10; tips of dorsal-fin spines conspicuously pale; dorsum with row of 5 dark blotches, some of which extend distinctly onto dorsal fin; last blotch on dorsal fin much narrower than anterior blotches (Ref. 85161).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Smith-Vaniz, W.F., 2023. Review of Indo-West Pacific jawfishes (Opistognathus: Opistognathidae), with descriptions of 18 new species. Zootaxa 5252(1):1-180. (Ref. 128653)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [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).
Trofisch niveau (Ref.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).