Why does my pleco keep doing this...

Question

he keeps floating at the top then whenever i get the net to flush him he swims around and floats again.if anyone has any answers please send them to me.

thanks 4 the help=]=]

Answer 1

 sorry to say but there is a  good chance you are going to lose your fish. i just bought 2 small pleco and one would swim for a bit then free flow with the water in my tank between the bubblers and the filter. but whenever i went to take him out he would swim again. then i woke up in the morning and he was face up in the corner.