The grey spot has been on this fish for at least a year, but today is the first day that a hole developed in it. It looks like an angry little volcano. Can anyone help me diagnose it?
Junior Member
The grey spot has been on this fish for at least a year, but today is the first day that a hole developed in it. It looks like an angry little volcano. Can anyone help me diagnose it?
Senior Member
The grey spot on the back? You can either treat with iodine once and observe, or get tricideneo, mix with fish slime, and rub it in the area, and observe.
Also, what's your water parameter? Can you upload more pictures as I can't really see it being a hole, thanks.
Junior Member
It seems to have healed up on its own.
Senior Member
Maybe it's just a damage scale that needs to be regrown.
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