I wonder how the fish decide what the smallest piece they will eat is?

The Purina site says, "Match the feed size to the size of the fish. If the fish vary in size, use Purina Game Fish Chow with multi-sized particles. The floating ration allows for monitoring of the amount of feed consumed. Feed only as much as fish will eat in 10 - 15 minutes." so they know you can't just dump the small feed in a pond and have good results.

Now I have to rethink my choice of dies for making pellets, because I don't want to make pellets that are too small for the largest fish. Although the dies are cheap enough to have several.