And I just was wondering if you meant my 1 four inch bichir or did you think I mean I have 4 bichirs? HahaYou might be able to get away with an acara or firemouth, but I think it is pushing it a bit, the 4 Senegal and 2 angels will fill the tank up themselves when full grown. The firemouth would prefer to live in a group as well. Between the two I would say the acara probably a better choice. Keep an eye out for aggression between the angels and the other cichlid. If the angels are a pair, I wouldn't bother adding more cichlids.