Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Opistognathidae
Etymology: Opistognathus: Greek, opisthe = behind + Greek, gnathos = jaw (Ref. 45335); cyanospilotus: Nmae from Greek 'kyaneos' meaning dark blue and 'spilotos' for spotted, in reference to the characteristic blue markings on the head..
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic; depth range 12 - 30 m (Ref. 81517). Tropical
Eastern Indian Ocean: Thailand (Andman Sea) and Indonesia (Sumatra).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.0 cm TL male/unsexed; (Ref. 81517); 11.6 cm SL (female)
Morphology | Morphometrics
soft rays: 15;
Vertebrae: 29. This species is distinguished by the following characters: moderately elongate supramaxilla and mostly rigid maxilla with only a slight flexible lamina posteriorly; upper jaw's inner lining and adjacent membranes with a black blotch; when alive, the opercle, cheeks and upper jaw with prominent blue spots or blotches; no dark blotches on body and dorsal fin; lateral-line ends below verticals between sixth to eighth segmented dorsal-fin rays; caudal vertebrae 19 (Ref. 81517).
Found in sand/rubble bottoms among reefs in 12-30 m (Ref 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 28.2 - 29.2, mean 28.8 °C (based on 142 cells).
Phylogenetic diversity index (Ref. 82805
= 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 BS (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .