ecology

MFK people I spent some time in another post discussing treatment of large fish, namely the Arapaima. One thing I like about MFK forums whether I agree or not with other members it get's you thinking. It's one thing to mistreat fish or any animal. But one thing I firmly believe is that...

To my knowledge, the largest freshwater fish on record was that 646 lb Mekong giant catfish caught a little over 10 years ago. However, there may be a bigger arapaima, piraíba, wels, etc., that has yet to be caught. What's everyone's thoughts on what the word's largest fish (in mass) is?