[Cuz]

The trout will die by June if they are in a shallow lake or pond. They require cold water because the oxygen level is higher. Once the pond warms up the oxygen level drops below their need. Keep an eye on a pond that was stocked and you will eventually see dead floating trout. Guaranteed.
The biologist say 80% of trout that are caught and released will die. I suggest, if you are fishing in a small impoundment, keeping all the fish you catch. They are stocked in those places for catch and keep. The F&G people know the fish will die anyway. It's all about selling fishing licenses and trout stamps.