It seams with theses big cats its a battle of extremes you get the people with them in a 2 ft tank and have not got a clue (the store that sold them the fish is as equally to blame) and then you have this lot telling you to build a shark tank. I was at the London aquarium last week in one of there tank it has 5 or 6 RTC 1 very large TSN and a shed load of Pacus the note on the aquarium reeds all of theses fish have been donated to the aquarium and have out grown there tanks please be responsible when purchasing tropical fish. If people took note of this and came on sites like this before hand it would be a lot better for the fish and the aquarist. O how big is big boy now Cliff. And a pic of the wife at the London Aquarium(sorry taken with phone).