I've caught lakers, perch, pike, walleyes, rainbows, browns, brookies, crappies, bluegill, largemouth bass, and smallmouth bass on them. They are especially good for lakers, rainbows, and walleye. The smallest model, the 1/16 ounce is killer on perch and crappie, or finicky trout (as rare as finicky trout are in CO).