Hi EmmaliLucia and welcome to the forum. I'm glad your male wasn't too seriously harmed. Fortunately, his fins will grow back just fine. All you need is nice clean water, which I'm sure you'll do (judging from your first post). Follow Myates' advice and use API Stress Coat and a high protein diet, lots of frozen foods.
Curlyfatbattom, in general, you want to avoid using just plain table salt. Aquarium salt is best because it is made for use with fish. Just be careful it isn't MARINE salt. That is an entirely different thing. You are correct that salt can be used, but in specific situations. An overuse of salt leads to damage to the fish and a resistance to its medical properties.
Also, just a heads up: we pretty much frown on the practice of fish fighting. Even if you yourself don't actually fight your fish, you might want to avoid mentioning it just so you don't rile people up and get them mad at you.