The giant freshwater stingray may be the ... The rays have also been targeted for the burgeoning aquarium trade, though it is now illegal to fish for stingrays in Thailand.

True schooling fish, Zebra Danios, thrive in a big group ... easily integrate a low-maintenance aquarium into your busy life and live in harmony with freshwater fish.

A 300kg (661lb) stingray caught in the Mekong river in Cambodia is the biggest freshwater fish ever documented ... that he had caught a "very big" stingray - it turned out to be 3.98m long ...