Paratrygon aiereba (Müller & Henle, 1841)
Discus ray
photo by NRM Ichthyology Collection Database

Family:  Potamotrygonidae (River stingrays), subfamily: Potamotrygoninae
Max. size:  80 cm WD (male/unsexed); 78 cm WD (female); max.weight: 14 kg; max.weight: 25 kg
Environment:  demersal; freshwater
Distribution:  South America: Amazon River basin (Ucayali, Solimões, Amazon, Negro, Branco, Madeira and its affluents in Bolivia, and Tocantins River) and Orinoco basin.
Biology:  Common in shallow areas and near banks (Ref. 27749). Reproductive biology in upper Orinoco basin provided by Lasso et al. (1997a), where females appear to bear only two young per gestation. Larger individuals may attain 25 kg in weight. Food includes insects, crustaceans and fishes (Ref. 36687).
IUCN Red List Status: Data deficient (DD); Date assessed: 05 May 2004 Ref. (130435)
Threat to humans:  harmless

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