you can cross any peacock but kinda frowned on with most. If want to breed then breed the pure, true peacocks. Get one male & 3-5 females for a breeding group. Make sure the females go with the same male species. Or just buy 5-7 young of a species & raise them. Its also good to introduce new blood (females) from another source as long as they are pure so when they breed you have less possibility of getting deformed fishes inter breeding.
Dave