Oscar hit his head on something and it left a big mark, scales missing, indention. Is there anything I can do to prevent infection or just wait it out and see what happens? He is eating just fine and doesn't act abnormal in anyway.
water changes, and maybe add a little salt, 1 tsp per 3-5 gal if he doesnt show improvement. clean up excess fecal matter too every few days with a turkey baster. (big syringe like thing with a bulb at one end that you squeeze)