Strange Death

[Creature Seeker]

I was bought a Pangasius Catfishes last week and was going to take it back to the store when I realised how big it was going to get but then I noticed a strange blister on the side of its body. The next morning the blister had popped and there was a small deep whole in its place which was down to the poor tykes bone. A few days passed and he was still swimming fine and seemed happy enough when I switched the lights out last night. This morning I find him dead on the tank floor being nibbled at by other fish.

Anyone seen this kind of thing before?

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