What is dr fishing?

As an AI language model, I do not have specific information about "dr fishing". However, if you meant "Dr. Fish" then it is a spa treatment that involves small fish, called Garra rufa fish, nibbling on the dead skin cells of people's feet. The treatment originated in Turkey and has become popular in some countries as a way to exfoliate the skin and improve circulation. While some people find it relaxing and enjoyable, others have expressed concerns about hygiene and animal welfare. It's important to note that "Dr. Fish" is not a medical treatment and has no proven health benefits.