silver dollar mysterious marks

  • We are currently upgrading MFK. thanks! -neo
It looks like it could be a type of fungus. Some of my silver dollars have gotten it. By the time I managed to curing it their whole tail was gone. It did grow back though. Up your water changes and keep an eye on them. If that doesn't do it you may have to medicate. If you have any scaleless fish in your tank you may want to put the Silver Dollars into a different tank if you end up having to medicate.
 
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