he only has 1gamgenius said:Don't cut corners. Get a 50 gallons minimum for 3 rpb. If there is no space for such then get a different piranha that prefers a solitary life. RPBs like to shoal so don't just get one!
I agree - a 40 gallon 40x16x16" tank would be ideal.dutchfrompredator said:i wouldn't go smaller than a 40 gal long though.