Lionfish help

Hello just bought my lionfish 2 days ago. He is about three inches long. Since i have got him i have fed him 3 guppies. He was looking good till tonight he was laying on the botton kind of leaning one way. He seems to be breathing and opening his mouth alot bu i cannot tell if it is normal or not. Any suggestions would be appreciated.

 

what are you parameters?

what size tank?

might want to try but a air stone in there to increase the oxygen levels

 

He is a juvenile in a 60 gallon
ph- 7.8
ammonia, nitrate, and nitrite all 0
Salinity- 1.025

i have the fluval canister filter creating plenty of suface disruption

 

Can you get a picture?

 

you cant really see the lean in this picture though before he was laying with his boddy tilted under the edge of the live rock

 

cant get it to post.... ill give it another try