Ah I misunderstood what you were growing out. Well If you are going to be upgrading to a 180, you could put pretty much any cichlid you want in. I think a festae would work fine. If it were me, I would avoid the dovii or umbee and do like one 10-14" max sized cichlid and 2-3 5-8" ones. Viejas, perhaps a tetracanthus, texas, festae, whatever you like really for the big one. Cryptoheros, thoricthys, etc for smaller ones. With the Bichirs being large already, I doubt any cichlid would bother them much. just my .02