Corydora that couldn't sink
On Saturday I bought a pair of Corydora paleatus (Peppered cory). By the next day, the one would only stay at the top. It would just float there. It could swim down if it wanted to, but when it wasn't swimming it would float back up to the surface. It died yesterday. The other one is doing fine. I've never seen a cory do this before. Do corydoras have a swim bladder?
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