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Teleostei (teleosts) > 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).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 63 - 72 m (Ref. 13250). Tropical

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Eastern Pacific: Colombia and Costa Rica.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 27.1 cm TL male/unsexed; (Ref. 13250)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 13; Anal spines: 3; Anal soft rays: 13; Vertebrae: 26. This large (13.2-21.8 cm SL) species have the following set of characters: truncate caudal fin; D 13, A III; 102-105 oblique scale rows in longitudinal series; 68-73 pored lateral line scales; 26-30 gill rakers on lower limb of first arch; entire length of body with 3 violet parallel lines observed on the Colombian specimens (no spotting or other markings on head or body of Costa Rican specimen except for a series of small dark spots along the distal margin of dorsal fin); 16 caudal vertebrae (Ref. 75633).

Mouthbrooders (Ref. 240).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Employ mouthbrooding to care for their young (Ref. 240).

Main reference Upload your references | References | Coordinator | Collaborators

Acero, A.P. and R. Franke, 1993. Una nueva especie de Opistognathus (Pisces: Perciformes) para la isla de Gorgona (Pacífico Colombiano). Caldasia 17(2):291-293. (Ref. 13250)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 24 May 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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Trophic ecology
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Visual pigment(s)
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Estimates based on models

Preferred temperature (Ref. 123201): 13.6 - 20.9, mean 15.1 °C (based on 8 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 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).

Trophic level (Ref. 69278): 3.7 ±0.6 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (17 of 100).

Opistognathus fenmutis Acero P. & Franke, 1993