My fish has had a white cyst looking thing on it’s head for about 2 weeks and another that looks like it’s growing underneath the skin. I’ve had him quarantined for the 2 weeks in an 82 degree F tank with aquarium salt. It swims normal and eats just fine. But I’m not seeing any changes and would like to reunite it soon with the other fish before it becomes lonely. I don’t know what this is growing or how to treat it. Please help!

