even though the red bellied piranha is a schooling fish would it be possible to keep one by itself in a 20 gallon aquarium
is mr.bubbles mouth always open?viralmouser;1951992; said:hey guys I see I'm up again LOL,umm yea you can do a 20G until hes about 6" then you need to upgrade to a 55G at the least but if you want a massive very aggressive solo like mr. bubbles you need a 90G and I know that sounds big for a solo but thats just the scret to getting that really big size other than water qaulity and nutrion and water temp etc....