Found in database

order	scientific name	common name	record weight in kg	record weight in lb	water	country	picture
catfishes over 50 kg	Brachyplatystoma filamentosum	Piraiba	200,00	440.92	Amazon River system	Venezuela, Brazil
bony tongues	Arapaima gigas	Pirarucu	154,00	339.51	Amazon River system	Ecuador
catfishes over 50 kg	Zungaro zungaro	Jau	100,00	220.46	Amazon River system	Brazil, Colombia, Peru, Bolivia, Venezuela
catfishes over 50 kg	Brachyplatystoma juruense	Zebra Catfish	100,00	220.46	Amazon River system	Peru, Venezuela, Brazil
catfishes over 50 kg	Brachyplatystoma rousseauxii	Gilded Catfish	100,00	220.46	Amazon River system	Colombia, Peru, Venezuela, Bolivia, Brazil
catfishes over 50 kg	Sorubimichthys planiceps	Firewood Catfish	50,00	110.23	Amazon River system	Brazil, Peru, Venezuela
lungfishes	Lepidosiren paradoxa	South American Lungfish	40,00	88.18	Amazon River system	Paraguay, Argentina, Peru, Bolivia, Brazil, Colombia
catfishes 10-50 kg	Pseudoplatystoma tigrinum	Tiger Sorubim	40,00	88.18	Amazon River system	Brazil, Colombia, Peru, Bolivia, Venezuela
catfishes 10-50 kg	Pinirampus pirinampu	Flatwhiskered Catfish	30,00	66.14	Amazon River system	Peru, Bolivia, Venezuela, Brazil, Colombia, Paraguay
characins	Hydrolycus scomberoides	Payara	30,00	66.14	Amazon River system	Venezuela, Brazil, Peru
characins	Piaractus brachypomus	Pacu	25,00	55.12	Amazon River system	Brazil, Peru, Venezuela
catfishes 10-50 kg	Oxydoras niger	Ripsaw Catfish	25,00	55.12	Amazon River system	Colombia, Peru, Bolivia, Venezuela, Brazil
skates and rays	Heliotrygon rosai	Rosa’s Round Ray	25,00	55.12	Amazon River system	Brazil
catfishes 10-50 kg	Brachyplatystoma vaillantii	Laulao Catfish	20,00	44.09	Amazon River system	Brazil, Colombia, Peru, Bolivia, Venezuela
knifefishes	Electrophorus varii	Electric Eel	20,00	44.09	Amazon River system	Brazil
skates and rays	Plesiotrygon iwamae	Long-tailed River Stingray	19,50	42.99	Amazon River system	Ecuador
skates and rays	Potamotrygon constellata	Thorny River Stingray	16,80	37.04	Amazon River system	Ecuador
skates and rays	Potamotrygon scobina	Raspy River Stingray	15,00	33.07	Amazon River system	Brazil
skates and rays	Potamotrygon falkneri	Largespot River Stingray	10,00	22.05	Amazon River system	Argentina, Peru, Bolivia, Brazil, Paraguay
catfishes up 10 kg	Acanthicus adonis	Pearl Devil Pleco	10,00	22.05	Amazon River system	Brazil
Perciformes up 10 kg	Cichla monoculus	Popoca Peacock	9,00	19.84	Amazon River system	Brazil, Colombia, French Guiana, Peru
bony tongues	Osteoglossum bicirrhosum	Arawana	9,00	19.84	Amazon River system	Brazil
Perciformes up 10 kg	Plagioscion squamosissimus	South American Silver Croaker	7,00	15.43	Amazon River system	Brazil, Guyana, Colombia, Peru, Ecuador, Suriname, Argentina, French Guiana, Venezuela, Bolivia
skates and rays	Heliotrygon gomesi	Gomes’s Round Ray	6,20	13.67	Amazon River system	Colombia
herrings	Pellona flavipinnis	Yellowfin River Pellona	6,00	13.23	Amazon River system	Uruguay, Brazil, Venezuela, Colombia, Paraguay, Argentina, Peru, Bolivia
catfishes 10-50 kg	Acanthicus hystrix	Black Devil Pleco	6,00	13.23	Amazon River system	South America
catfishes up 10 kg	Pseudacanthicus histrix	?	6,00	13.23	Amazon River system	Brazil
catfishes up 10 kg	Panaque nigrolineatus	Royal Panaque	5,00	11.02	Amazon River system	Brazil, Colombia, Venezuela