decide

how many different type of s.a can i fit in a 55gl and which ones can be kept together?

Hi Folks, I am going to be setting up a 90 gallon soon in place of my 55 and I'm trying to decide what sort of fauna I want. Ever since I was a young teen I have been enamored with big central/south american cichlids after having a few oscars, I was waiting until I had a big enough tank to get...