A couple more danios may be adviseable. They get a little nippy if there aren't enough (5 or more is usually a good number) What size tank? would help. Fancy tailed guppys are always eye catching, A school of 8 or more small tetras are cool(neons,cardinals, glow lights) Red wag tuxedo Platys. Any community fish will get along. If this is a new tank do not add any more until it has cycled. If it has then add the fish one type at a time. 2 week intervals until stocked. Angels can get aggressive sometimes and are usually added last. Usually only one in a mixed community.