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Opistognathus variabilis  Smith-Vaniz, 2009

Variable jawfish
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Opistognathus variabilis   AquaMaps   Data sources: GBIF OBIS
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Image of Opistognathus variabilis (Variable jawfish)
Opistognathus variabilis
Picture by Ryanskiy, A.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Opistognathidae (Jawfishes)
Etymology: Opistognathus: Greek, opisthe = behind + Greek, gnathos = jaw (Ref. 45335);  variabilis: Name from Latin 'variabilis', refers to the highly variable color pattern and jaw morphology of this species.

Environment / Climate / Range Ecology

Marine; pelagic-neritic; depth range 0 - 37 m (Ref. 81517).   Tropical

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

Indo-West Pacific: from the eastern Indian Ocean (Maldive Islands and Sri Lanka) and throughout most of the central western Pacific, including the Ruykyu Islands and Palau.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 9.6 cm SL male/unsexed; (Ref. 81517)

Short description Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 14-16; Anal spines: 3; Anal soft rays: 14 - 16; Vertebrae: 28 - 30. This species is distinguished by the following characters: elongate supramaxilla and posterior end of maxilla produced as a thin flexible lamina, varying from moderate to well-developed; usually a single black stripe (well-developed in fish with elongate jaws but only slightly in those with relatively short jaws) at the inner lining of upper jaw and adjacent membranes; lateral-line ends below verticals between segmented dorsal-fin rays 3-6 (typically fourth or fifth); body with about 68-83 oblique scale rows; caudal vertebrae 19-20 (rarely 20), except only 18 in fish from northern Palawan. There are several color morphs that exist (geographic variations) (Ref. 81517).

Biology     Glossary (e.g. epibenthic)

Found in sand/rubble bottoms in 0-37 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'l. J. Ichthyol. 15(2):69-108. (Ref. 81517)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  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):  3.5   ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .