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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); brochus: Name from the Latin word 'brochus' meaning projecting, referring to its protruding teeth..

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

Marine; demersal; depth range 20 - 82 m (Ref. 75633). Tropical

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Eastern Pacific: upper Gulf of California and Pacific coast of Costa Rica.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.4 cm SL male/unsexed; (Ref. 75633); 4.3 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 13; Anal spines: 3; Anal soft rays: 12; Vertebrae: 26. This small (3.9-5.4 cm SL), slender species possess the following combination of characters: dark speckling on head and body; dusky dorsal and anal fins, several black blotches on dorsal fin; short maxilla (0.5-0.9 eye diameters beyond orbit), truncate; long and slender teeth; D 13, A III; 49-57 oblique scale rows in longitudinal series; 28(29)-31 pores in lateral line series; gill rakers on lower limb of first arch 15 (17)-18; anterior nostril with a short tube without cirrus; 16 caudal vertebrae 16 (Ref. 75633).

Collected by otter trawls and dredge. Female specimens at 3.85 and 4.32 cm SL are gravid (Ref. 75633).

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

Main reference Upload your references | References | Coordinator | Collaborators

Bussing, W.A. and R.J. Lavenberg, 2003. Four new species of eastern tropical Pacific jawfishes (Opistognathus: Opistognathidae). Rev. Biol. Trop. 51(2):529-550. (Ref. 75633)

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

FAO - Publication: search | FishSource |

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Estimates based on models

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): 3.3 ±0.5 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Opistognathus brochus Bussing & Lavenberg, 2003