Opistognathus randalli, Gold-specs jawfish

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Opistognathus randalli Smith-Vaniz, 2009

Gold-specs jawfish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Opistognathus randalli   AquaMaps   Data sources: GBIF OBIS
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Image of Opistognathus randalli (Gold-specs jawfish)
Opistognathus randalli
Picture by Ryanskiy, A.

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);  randalli: Named for Dr. John E. Randall..

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

Marine; pelagic-neritic; depth range 5 - 32 m (Ref. 81517). Tropical

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

Western Pacific: Indonesia, eastern Borneo and the Philippines.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 10.4 cm SL male/unsexed; (Ref. 81517); 10.9 cm SL (female)

Short description Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 14-16; Anal spines: 3; Anal soft rays: 14 - 15; Vertebrae: 28. This species is distinguished by the following characters: elongate supramaxilla and posterior end of maxilla produced as a thin flexible lamina; a single conspicuous black stripe at inner lining of upper jaw and adjacent membranes; dorsal, anal and caudal fins with narrow, pale (blue in life) distal margins; when alive, dorsal portion of iris golden; lateral-line terminus below verticals between segmented dorsal-fin rays 1 to 4, typically below second to third ray; caudal vertebrae 18 (Ref. 81517).

Biology     Glossary (e.g. epibenthic)

Males of this species are strongly territorial and frequently engage in jaw locking combat, apparently to evict rivals or confiscate their burrows (Ref. 81517). Found in sand/rubble bottoms near reefs in about 5-30 m (Ref 90102).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Smith-Vaniz, W.F., 2009. Three new species of Indo-Pacific jawfishes (Opistognathus: Opistognathidae), with the posterior end of the upper jaw produced as a thin flexible lamina. aqua, Int. J. Ichthyol. 15(2):69-108. (Ref. 81517)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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