i seen a fishing episode that i think was taped in the rock river canyon. they caught several of these monsters. it's said that they can grow to prehistoric age (a lot longer than 100 years). where they were fishing it was illegal to take them out of the water. it's legal to fish for them, but you're not supposed to even take it out of water to weigh it. they use a measuring system to guage the weight. that's something. to catch a fish older than your great grandad.