I know nothing about trout.
BUT:
I think the usual answer is "it all depends". My personal belief is that fish like BG and most other sunfish will do better on pellets. I think there is too much non digestible waste in bugs to really help a bigger fish. The same could also be true when feeding on smaller fish. How much of a smaller fish is digestible when we consider guts, fins, teeth, hair and eyeballs? With the exception of inert materials, the pellet delivers more for the buck(IMO). That would be especially true if the pellet is Menhaden(oily) versus plant based.
Sunfish will do just fine of plant based but seem to do even better on fish based pellets.
All of this seems to make sense until I see the pic of the huge Redear posted on Big Bluegill. That sucker probably never saw a high protein pellet and redears, which get larger than BG, are rarely pellet trainable.
Another exception to my thoughts is LMB. Yeah, they can be somewhat pellet trained but keeping them on pellets doesn't always work. And yet, they sometimes become enormous on just eating bluegills and other fish.
Last edited by Dave Davidson1; 03/25/15 02:34 PM.