21–26 gill rakers on lower limb of first gill arch
Gill rakers shorter than snout. Not visible from side of head when mouth open
5–6 dorsal and anal finlets
Body slender, its depth at posterior margin of opercle 4.9–6 times FL
Large interdorsal space
Yellowish silver below; 2 rows of spots along sides of back; 2 faint stripes sometimes present at level with lateral line and a black blotch behind pectoral fin base.
Up to 24 cm TL, maximum weight to at least 0.750 kg.1
Found in tropical waters of the Indo-West Pacific.
No FAO distribution map available.
Inshore epipelagic, neritic. Found in waters above 17°C. Depth range not recorded.
Feeds on the largest zooplankton of the 3 Rastrelliger species. Forms schools with similarly sized individuals. Little is known regarding life history, estimated maximum age is 1–3 years.2
An important commercial species in the Philippines. Caught in fish corrals, by bag netting, gill netting and in round seines.
Rastrelliger brachysoma differs in having a deep body, its depth at posterior portion of opercle 4.9–6 times in FL (vs. slender 3.7–4.3); head length equal to or less than body depth (vs. greater than body depth); gill rakers not visible from side of head when mouth open (vs. visible) and 30–48 gill rakers on lower limb of first gill arch (vs. 21–26).
Rastrelliger kanagurta differs in having gill rakers that are long and visible when mouth is open (vs. shorter than snout, not visible); 30–46 gill rakers on lower limb of first gill arch (vs. 21–26); bristles on longest gill raker moderate in number (100+ for 13 cm specimen) (vs. few (30–55)) and a body moderately deep, its depth at posterior portion of opercle 4.3–5.2 times in FL (vs. slender, 4.9–6).
Scomber australasicus differs in having teeth present on roof of mouth (palatine teeth) in single or double rows (vs. absent); first anal-fin spine stiff and strong (vs. thin, rudimentary); many oblique wavy dark lines along back and pearl white below with wavy, broken lines giving faintly speckled appearance (vs. 2 rows of spots along back, 2 faint lines level with lateral line and silvery white below) and 25–35 gill rakers on first gill arch (vs. 30–48).