I'd get 2 females and let a pair form. Then give the other ones to the LFS or donate them to Petco or Petsmart or something. They'll just keep fighting. Some male cichlids are just like that.
"One day...one day, this path will lead us to the White City, and the tower guard will take up the call: the Lords of Gondor have returned!"
–Boromir, The Lord Of The Rings