Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal. Tropical
Western Indian Ocean: Kenya to South Africa and Madagascar. Previously referred to as Johnius dussumieri, which is restricted from Pakistan east to the Andaman Islands.
Length at first maturity / Size / Weight / Age
Maturity: Lm 13.0  range ? - ? cm
Max length : 40.0 cm TL male/unsexed; (Ref. 4336); common length : 20.0 cm TL male/unsexed; (Ref. 3490)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sasaki, K., 1997. Resurrection of two East African species of Johnius (Perciformes, Sciaenidae). Ichthyol. Res. 44(3):311-315. (Ref. 13679)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: minor commercial; gamefish: yes
Estimates based on models
Preferred temperature (Ref. 115969
): 24.3 - 27.6, mean 26.9 °C (based on 72 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00718 - 0.01922), b=3.09 (2.95 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±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 to moderate vulnerability (29 of 100) .