Found in database

order	scientific name	common name	record weight in kg	record weight in lb	water	country	picture
skates and rays	Potamotrygon brachyura	Short-tailed River Stingray	260,00	573.20	Rio Parana	Argentina
catfishes over 50 kg	Pseudoplatystoma corruscans	Spotted Sorubim	150,00	330.69	Rio Parana	Argentina
characins	Salminus brasiliensis	Dorado	34,00	74.96	Rio Parana	Argentina
catfishes over 50 kg	Pseudoplatystoma fasciatum	Barred Sorubim	32,00	70.55	Rio Parana	Argentina
catfishes over 50 kg	Luciopimelodus pati	Pati	32,00	70.55	Rio Parana	Argentina
catfishes 10-50 kg	Lithodoras dorsalis	Rock-Bacu	21,00	46.30	Rio Parana do Cambixe	Brazil
characins	Prochilodus lineatus	Curimbata	17,00	37.48	Rio Parana	Argentina
skates and rays	Potamotrygon falkneri	Largespot River Stingray	10,00	22.05	Rio Parana	unknown
Perciformes up 10 kg	Percichthys trucha	Creole Perch	9,00	19.84	Rio Parana	Argentina
skates and rays	Potamotrygon histrix	Porcupine River Stingray	7,00	15.43	Rio Parana	Argentina
characins	Brycon orbignyanus	Pirapitá	6,00	13.23	Rio Parana	Brazil