Were they sold as a bonded/mated pair? Or just a couple clowns? If they were sold as a bonded/mated pair the fighting should very limited if any. And if they don’t stop soon I’d take them back and get your money back. As we all know a bonded/mated pair are sold for more and that’s not a fair if they are two clowns. I have a couple bonded pair. They don’t breed that I know of but they very rarely fight and if they do it’s very light or short. If you bought a couple of clowns then like
@Zoa_Fanatic mentioned, the fighting is normal until they determine who’s male/female. Be careful though. I had a couple I tried to get to bond and naturally the more expensive one died from getting beat up too much. If they do keep fighting maybe take
@blaxsun advice and get a smaller one.