Not looking for treatment because I already put him out of his misery, but has anyone ever ran across a hole in their fish? Started as a little white dot and spread into the below. Believe it or not he was a live in this pic. Had him in my QT for a 4 weeks and he was fine. The first day in my DT he showed a white mark on his side. Thought it was from him brushing against the rock work but it just kept getting deeper and larger.