HomeFish encyclopediaRay-finned fishesHerringsHerrings, shads and sardinesRiver Plate sprat River Plate sprat (Platanichthys platana) Scientific name: Platanichthys platana Regan, 1917 The River Plate sprat (Platanichthys platana) is a freshwater fish of the family Clupeidae. Native range: South America, just north of Rio de Janeiro, Brazil to Uruguay and Argentina. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-21; Anal spines: 0; Anal soft rays: 12 - 23. Belly sharply keeled. Anterior (first) supra-maxilla minute or absent (cf. Ramnogaster); posterior frontal fontanelles on top of head retained in adults; no sharp retrorse spine near front of maxilla (cf. Rhinosardinia); no fleshy outgrowths on the hind margin of the gill opening (cf. Sardinella and Harengula); silver lateral stripe present (cf. Sprattus fuegensis).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlatanichthys platanaFamilyClupeidae (Herrings, shads and sardines)OrderClupeiformes (Herrings)ClassActinopterygii (Ray-finned fishes)Maximum length6.7Common length5.0Depth range0–50 m (0–164 ft)EnvironmentFreshwater; brackish; pelagic; depth range 0 - 50 mClimateSubtropicalDistributionSouth America: just north of Rio de Janeiro, Brazil to Uruguay and Argentina.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026