Classification / Names
Common names from other countries
Size / Weight / Age
Max length : 42.0 cm TL male/unsexed; (Ref. 9710); common length : 25.0 cm TL male/unsexed; (Ref. 9813)
Length at first maturity
Lm 18.1, range 12 - ? cm
Marine; brackish; reef-associated; depth range 0 - 25 m (Ref. 90102)
Climate / Range
Tropical; 24°C - 28°C (Ref. 27115), preferred ?; 30°N - 30°S
Eastern Indian Ocean and Western Pacific: Andaman Islands, Thailand, Malaysia, Singapore, Indonesia (including Irian Jaya), Viet Nam, Ryukyus, southern and eastern China, Taiwan, South China Sea, Philippines, and Palau. Replaced by Siganus lineatus to the west, south and east of the region described by the said localities.
Countries | FAO areas | Ecosystems | Occurrences | Introductions
soft rays: 9;
Vertebrae: 13. Dusky blue dorsally, silvery below; a bright yellow spot adjacent to last few rays of dorsal fin; head with lines and spots. Preopercular angle 91°-102°; strong scales fully cover the cheeks; midline of thorax scaled, not the pelvic ridges. Anterior nostril with extremely low rim, slightly expanded posteriorly. Spines stout, pungent, venomous.
IUCN Red List Status (Ref. 90363)
Fisheries: commercial; aquaculture: commercial; aquarium: commercial
Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
2.7 ±0.30 se; Based on food items.
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Low vulnerability (19 of 100)