thinking of rethinking my 50 gallon tank (basicly a 75 but not that tall) i was thinking of dividing it in 2 and adding some species of piranha on ether side .. thoughts?
do you mean schooling species? It might work but you'd need a longer tank. Like 6' at least imo. It'd be cool to have a divided tank with a rhom and an elongates or something, but you'd still need a decent sized tank for full grown specimens.