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- Apr 30, 2019
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I’ve never seen anything like it before, but I’m guessing it’s some kind of parasitic isopod. The fish is eating well and the rest of the fish in the tank are unaffected, although the yellow tang was rubbing its flank on a rock 2 nights ago after lights out. No evidence of ich/velvet on any fish.
I tried to catch the clown for a freshwater dip, but it must have rubbed the parasite off on a rock during the attempted capture as it has now disappeared.
Anyone seen this or have any ideas?


