My albino girl has had a pink fin for a while that’s turned into a lumpy growth she eats and moves normally. She shares the tank with another female, and I wondered if they’d been fighting? I feed them at opposite ends of the tank and they both have driftwood and tunnels. They’ve been in there together for about 6 months as my other tank was decommissioned. I have increased the water changes and added aquarium salt. Is there anything else I can do to help her?