While it is quite obvious this animal already exists this page identifys possibly bigger specimens.
About this Cryptid
giant catfish are catfish that grow record-breakingly large. Specimens have been reported all throught the world. Sometimes they are reported devouring humans. Specimens have been reported 6-14 feet in length and up to 1,000 pounds in weight. The current record for largest catfish is a 646 pound, nine foot long mekong giant catfish.====