Updated On November 6th, 2017
Pet's info: Fish | Unknown - Fish | Male
Answered By Dr. Elizabeth 118
Veterinarian
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It looks like it may be some sort of fungal infection on Tiller. I would recommend to the the photo to a pet store and see if they agree. They can also sell you fungal medication to add to his water. Sometimes these infections can be serious. If you have a pet store in town that specializes in fish, they are your best reference. Best of luck!
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