Gage;2274399; said:for a single male id say you should be fine in a tank about 75g (48x18x18) but preferably a 90 (48x18x24), i cant stand tanks that are only 18" tall if the tank is big.
Cross127;2274865; said:No 125 MINIMUM. With a fish that can DWARF Parachomis you need a 125 for them. 75 is too small. They get 16" long and about 10"+ deep. They get HUGE so watch out.