Chiclids and others!?

[dsaundry]

If you are going for aggressive, and if you are going south american, I would suggest the following.. pike cichlids,, texas cichlids,,salvini cichlids or dempsey's..all can be very aggressive but you still have to watch them as they get big. pikes are very aggressive and can get really nasty with tankmates that are smaller..I dont know too much on africans

[auratus]

it really depends on what you have in there already
list the fish you already have and we can go from there