Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii (sharks and rays) > Myliobatiformes
(Stingrays) > Potamotrygonidae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic; pH range: 5.0 - 6.0; dH range: 10 - ?; potamodromous (Ref. 51243). Tropical; 24°C - 26°C (Ref. 2060)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm WD male/unsexed; (Ref. 36687); max. published weight: 34.2 kg (Ref. 85107)
South America: Uruguay, Paraná-Paraguay, Orinoco, and Amazon River basins.
Found in freshwater rivers. It is an extremely dangerous species. Maximum length reported in Axelrod et al., 1991 (Ref. 6398) is 100 cm TL.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
16 pups were born by one female in captivity (Ref. 57489).
Ortega, H. and R.P. Vari, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref. 6329)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Traumatogenic (Ref. 4716)
Fisheries: minor commercial; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Fec=16).
Vulnerability (Ref. 59153
): Very high vulnerability (83 of 100) .