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Opistognathus brochus W. A. Bussing and R. J. Lavenberg, 2003
Life   Vertebrata   Fish   Opistognathidae   Opistognathus

Opistognathus brochus
© Copyright Photographer/SFTEP, 2002 · 0
Opistognathus brochus

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Opistognathus brochus
© Copyright Photographer/SFTEP, 2002 · 0
Opistognathus brochus

Main identification features
  • body: no marks
  • d:13, 7 dark blotches
  • c: 2 bars, 1st black
  • protruding teethinside mouth - not colored
  • anal fin black
Toothy jawfish

Elongate, slender, compressed, tapering; head profile rounded; front nostril with a simple flap at rear; top margin of operculum straight in male, concave in female, without a flap; mouth at front, relatively short, extends less than one eye-diameter behind eye, top jaw expanded dorsally at rear and with straight to concave rear edge, same in both sexes; teeth on both jaws slightly protruding, visible when mouth is closed; no papillae between tooth rows; lateral line on front half of body only, ends under between first and second dorsal soft ray, 28-31 pores; 1-2 small curved teeth at front of roof of mouth; 23-26 rakers on first gill arch; dorsal fin XI,13, fin extended at rear; anal III, 12, fin extended at rear; pelvic fin with second soft ray very long in both sexes; tail fin rounded; head, nape and pectoral fin base scaleless, rest of body scaly; 49-57 oblique scale rows.

Preserved fish: head and body cream; top of head tan, with a tiny black spot on each side behind eye, nape, operculum and cheek with diffuse brown network; snout dusky, front half of top jaw dusky, interrupted by a pale area at front side; underside of head dusky; iris dark; dorsal fin dusky, with ~7 diffuse blotches on membranes in spiny and soft sections, 1st one between spines I-II; anal fin black; inner 3 rays of pelvic fin black in male; tail with black-bar across base and a dusky bar across the mid-fin; no obvious color inside mouth; no dark bars inside top jaw.

Size: 4.7cm.

Habitat: burrows in sand and rubble.

Depth: 55-82m.

Upper Gulf of California and Costa Rica.

Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 82 m.
Depth Range Min: 55 m.
Diet: bony fishes; mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=32; Southern limit=9; Western limit=-115; Eastern limit=-84; Latitudinal range=23; Longitudinal range=31.
Egg Type: Brooded; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: East Pacific endemic; Tropical Eastern Pacific (TEP) endemic; All species.
Habitat: Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 4.7 cm.
Regional Endemism: TEP endemic; Continental TEP endemic; 3 provinces (Cortez + Mexican + Panamic) endemic; Continent only; Continent; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;

Links to other sites

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


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Opistognathus brochus
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Opistognathus brochus Bussing & Lavenberg , 2003

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Opistognathus brochus   AquaMaps   Data sources: GBIF OBIS
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Google image Image of Opistognathus brochus No image available for this species;
drawing shows typical species in Opistognathidae.

Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa

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

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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 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 ).

Biology     Glossary (e.g. epibenthic)

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 Maturity | Reproduction | Spawning | Eggs | Fecundity | 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


Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans


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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (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 ). 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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