Does anyone have the Iridescent Shark / Pangasius Catfish? I see some in home aquariums, doesn't the Iridescent Shark / Pangasius Catfish grow up to 300cm which is like 10 feet long? How do you handle such a monster catfish? I checked the Wikipedia and this one says they can only grow up to 4 feet. Can someone explain? It even says that due to small sized tanks, most iridescent sharks kept in home aquaria grow to only six to twelve inches in length. ??? That's crazy, and it also says ,"As a rule of thumb, an iridescent shark requires a minimum tank size of 150 cm (5 feet). Schools require even larger tanks." Are there different species of the Iridescent Shark / Pangasius Catfish or just one? How do I differenciate the species? What do you feed them? Thank you for your time.