If you are looking for the fish that is the best pound for pound fighter on the flats, this is it. This encompasses several species all of which fight like Mike Tyson. They range in size from one pound to about as large as you can imagine. Some fly fishermen do not like them, as they can be hard on equipment. Many an angler has been spooled by them or had his rod explode from their exertions. But, if the bonefish are slow, you can always count on the opportunistic Jack to turn a rotten day into something you will never forget.