Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Sillaginidae
Etymology: Sillago: From a locality in Australia .
Environment / Climate / Range
Marine; brackish; reef-associated; amphidromous (Ref. 51243); depth range 0 - 60 m (Ref. 6205), usually 0 - 2 m (Ref. 90102). Tropical; 26°C - 29°C (Ref. 4959), preferred 27°C (Ref. 107945); 41°N - 36°S, 20°E - 166°E (Ref. 6205)
Indo-West Pacific: southern Red Sea (Ref. 94953) and Knysna, South Africa to Japan and south to Australia. Reported from New Caledonia (Ref. 9070). In Japan, this name has often been misapplied to Sillago japonica; often misidentified as Sillago lutea or Sillago vincenti.
Length at first maturity / Size / Weight / Age
Maturity: Lm 22.5, range 13 - 19.1 cm
Max length : 31.0 cm SL male/unsexed; (Ref. 44894); common length : 20.0 cm SL male/unsexed; (Ref. 9679); max. reported age: 7 years (Ref. 43081)
(total): 11 - 13;
soft rays: 18 - 23. Swim bladder with two anterior and two posterior extensions. The anterior extensions extend forward and diverge to terminate on each side of the basioccipital above the auditory capsule. Two lateral extensions commence anteriorly, each sending a blind tubule anterolaterally and then extending along the abdominal wall below the investing peritoneum to just posterior of the duct-like process. Two posterior tapering extensions of the swim bladder project into the caudal region, one usually longer than the other. The species has a low lateral line with about 70 scales (Ref. 48635).
Common along beaches, sandbars, mangrove creeks and estuaries. Recorded from freshwater. Form schools. Adults bury themselves in the sand when disturbed (Ref. 6205, 44894). Feed mainly on polychaete worms, small prawns (Penaeus), shrimps and amphipods (Ref. 6226, 6227, 44894). Oviparous (Ref. 205). Larvae and juveniles are pelagic feeding on planktonic (Ref. 43081). Rarely captured by prawn trawling vessels. Marketed fresh and frozen (Ref. 9987).
McKay, R.J., 1992. FAO Species Catalogue. Vol. 14. Sillaginid fishes of the world (family Sillaginidae). An annotated and illustrated catalogue of the sillago, smelt or Indo-Pacific whiting species known to date. Rome: FAO. FAO Fish. Synop. 125(14):87p. (Ref. 6205)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: commercial; aquaculture: commercial
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00353 - 0.00620), b=3.14 (3.06 - 3.22), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.1 se; Based on diet studies.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (K=0.75-1.22; tm=1; tmax=4; Fec=16,682).
Prior r = 0.85, 2 SD range = 0.43 - 1.68, log(r) = -0.16, SD log(r) = 0.34, Based on: 1 M, 3 K, 1 tgen, 2 tmax, 4 Fec records
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .