My thought on when they say a min tank size is 90 take and double it in some cases, which maybe then could be appropriate size, but for a full grown puffer they should be housed in huge tanks that most average home aquarist would dream of haveing stateing in the thousands of gallon range. Jmo . Yes currently i may house a sohal tang in a 90 gallon not knowing any better before i discoved this site but currently i have a 280 wide that is 72 x 36 x 25 tall in the progress of being built after the first of the year even the housing him might be a little tight. but that all i could fit in the room where my tanks have to go. :thinking: