Flowerhorn breeding is tough for a number of reasons, most notably (from what I’ve read and hear) many of the males imported are also infertile. Breeders do this to keep you buying from them rather than breeding your own. I know it’s possible to find fertile flowerhorns I just wouldn’t have the foggiest where to start or how to be sure one is fertile. Another is breeding them in itself, they are extremely aggressive towards one another. If you’re looking for a fun easy fish to breed may I recommend convicts? By far one of the most overlooked cichlid in the hobby. Good luck ?