HomeFish encyclopediaRay-finned fishesHerringsHerrings, shads and sardinesBonga shad Bonga shad (Ethmalosa fimbriata) Scientific name: Ethmalosa fimbriata Bowdich, 1825 The Bonga shad (Ethmalosa fimbriata) is a freshwater fish of the family Clupeidae. BiologyOccurs in inshore waters, lagoons and more than 300 km up rivers (e.g. Gambia River). Feeds by filtering phytoplankton, chiefly diatoms. Breeds throughout the year in waters of salinities 3.5-38 ppt, but with peaks in at least some areas. Spawns in the sea, in estuaries and rivers. Feeds on phytoplankton, chiefly diatoms. Marketed fresh, also smoked and dried.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEthmalosa fimbriataFamilyClupeidae (Herrings, shads and sardines)OrderClupeiformes (Herrings)ClassActinopterygii (Ray-finned fishes)Maximum length45.0Common length25.0EnvironmentMarine; freshwater; brackish; pelagic-neritic; catadromous; depth range 0 - ? m, usually 0 - 50 mClimateTropicalDistributionEastern Central Atlantic: Dakhla, Western Sahara to at least Lobito, Angola, corresponding to the extreme northerly and southerly limits of the 25?C isotherms throughout the year; dwarf population exist in Lake Nokou?, Benin. Cape Verde records based on erroneous type locality for Ethmalosa fimbriata by Bowdich - followed by later authors.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: highly commercial; aquaculture: experimentalResilienceHigh, minimum population doubling time less than 15 months (K=0.25-0.36; tm=1; Fec=16,000) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026