Floating corydora?

Chen jing kai

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My corydora has been exhibiting weird behaviour. He has started to hover around the middle area of the tank and is moving slowly. Is this a swim bladder issue? Has anyone encountered this before? Thanks.
 
video of fish?
It looks like he has stopped. He does it a lot in the right side of the tank
 
C09B1E34-644D-45CA-B8B1-C1341F96031A.jpeg

This was a pic from last night.
 
The fish isn't feeling okay. Ragged fins and no barbells.
 
The fish isn't feeling okay. Ragged fins and no barbells.
Agreed. The fin damage is worst on the underside. It may be avoiding a sharp substrate? Cories are best kept on sand.
 

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