Commercial fishing that I am aware of is mainly for spoon bill. The egg roe is in high demand in Japan and the commercial guys want to open all water to nets. What monetary value is the carp? Maybe cat food? It still does not seem like a good business venture. Cat food in the raw maybe at $ .25 per pound? But on the other hand, $ 100.00 per pound spoon bill eggs gets their attention very quickly. Is it reasonable to assume that gill netting will not do harm to other fishes? Me, I think that would be a stretch. I want the carp gone as much as anyone. A large scale shocking operation with a barge to haul the carp take would seem to be a more efficient method of taking large volumes of carp. The other species simply just recover from the shock. That's my 2.