I just noticed today that my Minnow has a line along his back. It looks almost like ich, but it is only visible in a straight line from his face to his back, almost looks fuzzy. He's eating and acting fine. I don't know the water parameters yet.No other fish have been introduced and the tank has been running for a couple of years. Right now there are only 2 goldfish and the Minnow in about a 36 gallon cold water tank. I will post pics soon, sorry if it is hard to see, he wouldn't stay still and the tank needs to be cleaned a bit.
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