Our perch come up from below in a straight line, almost single-mindedly for surface food. Then they hit the food and dart off in a random direction. usually a tail-fin splash to do this. Sunken pellets are handled whichever way is fastest to get there.

They prefer not to hit the surface in bright light, but prefer sinking pellets. Best time to feed them is just after sundown, or early dawn. Also if you have a dock, they will hit the surface under it where they feel safer.