QUOTE(dholland24 @ Jul 3 2007, 10:26 PM)
whats up everyone, I just got a 75 gallon tank, was thinking about 5 of the black pirahnas to put into there. First time ever having these fish or any fish for that matter, any suggestions? is that to many for that tank? any suggestions would be appreciated.
That is a bad choice of fish if you are wanting to have that many. Back Rhoms are a solitary fish and will kill each other off sooner or later. if you are going to shoal them you want a Pygocentrus. redbellies caribe, ternetzi or piraya. those tend to shoal best. most Serrasalmus dont.
If you used the 75g tank I personally think that 3 or 4 reds would be fine in there but when they get larger they would need a 125g or so to be comfortable.
OH Ya, Welcome to the board