My Platy can't be right.

[B75]

My platy has a very unusual habit of swimming around the tank normally when the lights are off but when the lights are on he keeps resting near the surface, I'm a bit worried about this behaviour. Temperature is 25/77, ammonia and nitrite 0, nitate 20, ph 7.5. No signs of illness, feeds well.

Any ideas or is this one batty platty? Also everynow and again I treat them with some bubbles from my air stone which they love.

 

[WILDER]

Some do rest at athe top it's not gasping at the top is it, has the fish lost colour or darkened in colour.

 

[B75]

No gasping, at first I thought it was because when the lights are on its warmer at the top of the tank but 77 f is ok for platties.

 

[WILDER]

Yes that's fine just keep an eye on the fish.