What eats a lake trout?

Since there are many different species of trout living in different environments, they eat different things depending on the species. Saltwater species (aka 'Specks' or 'White trout') eat many things such as shrimp and minnows. Freshwater species (Rainbow trout, brown trout, etc.) eat minnows, tadpoles, and bugs that live on the water. When fishing for trout in fresh water, you are advised to fly fish, using a 'fly' as bait. When fishing for trout in salt water, it's advised to use either live or dead shrimp or cockahoe minnows.