I love em!!! Try to get a tank 2+1/2 by 2+1/2 (750x750)!!! 2x2 (600x600) is no good for big fish like giant gouramis and pacus etc, because by the time u invest the time and effort to grow yr favourate pet up, they need a bigger tank. And its after all that time u realize the big fish u now cherish cant even turn/get past other fish/hide from other bullying fish etc. Also, if the tank is to small initially, u will stunt them, and u risk the fish clamoing their fins when they're unhappy or scared, which will bend and kink the bones in the fins. These kinks and bends in the fins look ugly over time and is irreversible!