I hope this is the best place to post, I have a question about spawning fish, even though I don't want to breed them.
I have two black marble Angelfish in an 80 gallon community tank. Several weeks ago, I noticed one of the angelfish had damaged fins, and ick. I treated for the ick, that problem is solved, but the damaged fin problem is still there. When I sat and watched the tank, I saw it is the other angelfish that is damaging its fins. A few days ago, they spawned, and then promptly ate the eggs, which is fine, I don't have a setup or inclination to breed angelfish.
But how can I stop them from being aggressive with one another? The healthy one is still nipping at the other one, and doing some real damage. Is my only option a tank divider to separate them? I read that they can spawn every few weeks or so, and if this is normal activity for a spawning pair, I'm not sure how much more the injured fish can handle. They do kind of a nipping "dance" going face to face with each other, but then the healthy one starts taking bites out of the injured one's fins. The healthy one also chased the injured one away from the eggs.
Water parameters are fine, temp is about 79 degrees, tank is about 4 ft long, 21 inches high.
Thank you for any suggestions!