I don't know where you live, but here in Florida they're great for catching small-mouth bass - esp in Lake Okeechobee and the many lakes near Silver Springs is where I like to go. Catfish also respond well to these... Thanks for the good question!
BUT - Crappie are easy to catch - this will be a performer on the smarter fish.. I could catch speckled perch in Nov just by dropping a hook wth a bit of bread on it - and they'd keep coming...