Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 45 - 60 m (Ref. 9772), usually - m (Ref. ). Tropical; 0°C -
Indo-West Pacific: along the coasts of Australia and Papua New Guinea, from about 124° to 144°E. Record from Java and Sumatra is more likely referable to other related species.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm SL male/unsexed; (Ref. 9772); common length : 11.0 cm SL male/unsexed; (Ref. 9772)
Inhabits coastal waters (Ref. 9772). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sasaki, K. and P.J. Kailola, 1991. Johnius (Johnius) laevis, a new sciaenid from northern Australia and Papua New Guinea. Jap. J. Ichthyol. 38(2):119-123. (Ref. 9225)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.4 - 28.3, mean 27.3 °C (based on 43 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00435 - 0.01912), b=3.07 (2.90 - 3.24), 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. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (15 of 100) .