HomeFish encyclopediaRay-finned fishesSilversidesSurf sardinesSurf sprite Surf sprite (Iso natalensis) Scientific name: Iso natalensis Regan, 1919 The Surf sprite (Iso natalensis) is a marine fish of the family Notocheiridae. Native range: Indian Ocean, widely distributed, extending to Cape Agulhas, South Africa. BiologyDorsal spines: 4 - 7; Dorsal soft rays: 12-17; Anal spines: 1; Anal soft rays: 21 - 28. Translucent with silver lower head and band along side to silver spot on caudal peduncle and viscera enclosed in silver.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameIso natalensisFamilyNotocheiridae (Surf sardines)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length8.0EnvironmentMarine; pelagic-neriticClimateSubtropicalDistributionIndian Ocean: widely distributed, extending to Cape Agulhas, South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026