While it probably is a joke, the study has made me wonder. I can't help but think of those time when the releases are up and a toss of bait in the water results in a cloud of smolt attacking it. If it is truely harmful, then it could have a small effect. We outlawed trebles in the salt and require barbless hooks, so a regulation on this probably is not that far fetched, especially if it just puts a limit on the amount or percentage allowed.