So I purchased a beautiful oscar this evening and after getting him/her acclimated to the aquarium I thought it would be fine. It keeps floating down to the bottom of the aquarium as if there's too much pressure and I've already let some water out to help it acclimate easier. I don't know if it's sick or anything. The tank is fully cycled and I used pre conditioned water (got a great deal from a friend on some pre condition water). The oscar does move however when I take the net and move it generally near it or put my hand near it on the other side of the glass. Any input would be great.