Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 1 - 40 m (Ref. 9772). Tropical
Western Pacific: Taiwan, Hong Kong, Shanghai and Singapore.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.0 cm SL male/unsexed; (Ref. 9772); common length : 14.0 cm SL male/unsexed; (Ref. 9772)
Morphology | Morphometrics
(total): 10 - 11;
soft rays: 7 - 8. Small species with a moderately elongate body. Dark mottled pattern dorsally, creamy white ventrally; scale pockets on dorsal side of head and body with broad, dark margins; spinous dorsal fin black, pectoral fins grey, pelvic fins pale (Ref. 9772).
Inhabits shallow coastal waters (Ref. 9772).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sasaki, K., 1992. Two new and two resurrected species of the sciaenid genus Johnius (Johnius) from the West Pacific. Jap. J. Ichthyol. 39(3):191-199. (Ref. 10084)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 24.7 - 29.1, mean 28.4 (based on 648 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00468 - 0.02039), b=3.07 (2.91 - 3.23), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (15 of 100) .