To make a long story short, wanted another kind of cichlid so went and got one today at a pet store. I currently have 2 oscars and 2 jack's and the new one, which im not sure but i think its a firemouth. Anyways this new one has been chasing and is being very aggressive towards the others. All are about the same size. There in a 55 gallon tank as well. From what *** read these are not suppose to be real aggresive so tell me if *** got the right fish please.