HomeFish encyclopediaRay-finned fishesHerringsHerrings, shads and sardinesSmoothbelly sardinella Smoothbelly sardinella (Amblygaster leiogaster) Scientific name: Amblygaster leiogaster Valenciennes, 1847 The Smoothbelly sardinella (Amblygaster leiogaster) is a marine fish of the family Clupeidae. Native range: Indo-West Pacific, coasts of Africa eastward to Okinawa, Japan; south to Western Australia. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-21; Anal spines: 0; Anal soft rays: 12 - 23. Body moderately slender, belly rather rounded, scutes not prominent. Distinguished from A. sirm by the absence of spots along the flank (gold in life, black on preservation) and fewer lower gill rakers. Closely resembles A. clupeoides, which has fewer lower gill rakers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAmblygaster leiogasterFamilyClupeidae (Herrings, shads and sardines)OrderClupeiformes (Herrings)ClassActinopterygii (Ray-finned fishes)Maximum length23.0Common length18.0Depth range0–50 m (0–164 ft)EnvironmentMarine; pelagic-neritic; depth range 0 - 50 mClimateTropicalDistributionIndo-West Pacific: coasts of Africa eastward to Okinawa, Japan; south to Western Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceHigh, minimum population doubling time less than 15 months (Assuming Fec > 10,000) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026