RE: Winter Silver Carp?
Question 1: They might look for open spots, but I'm not sure. Often in our system, the low water velocity areas are the parts that ice up first, and stay iced up longest. Silver carp will almost always be in slow moving water, unless they are spawning, so they tend to be under the ice. On the other hand, I have noted that my fish with radio tags in sometimes move into very shallow water on sunny days in the winter, perhaps looking for water that is a degree or two warmer. (this is an unusual behavior in fish. Fish often avoid warm water in the winter, because it increases energetic needs in a fish that is nearly shut down for the winter, but if a fish is going to be active and feed, it makes sense to look for warm water. So it does make sense in a fish that feeds a lot in the winter.) I'm not sure that you could effectively approach a silver carp in shallow water with a boat. I sure had trouble getting a tight fix on those tagged fish, because mychase boat would spook them a long way off.
Question 2: Yes. And how. I sometiimes broke ice up to 4" thick for miles (maybe I'll post some pictures) with my work boat, which could pretty much slowly drive through the stuff and chop it up. We'd do this to locate tagged fish in tributaries. And sometimes, when trying to recapture a tagged fish in the winter, we'd use the boat to bust up all the ice behind a wing dike so that we could lay nets.During these processes, we could look over the side of the boat and watch the fish trying to jump and whacking themselves on the bottom of the ice. You could see the blood spurt when they hit sometimes. Sometimes the water would actually turn a bit pink from all the blood in it. And sometimes they hit the cracks between bergs and end up landing on the ice. Sometimes they could not get back in before they froze. I also have pictures of silver carp sitting up on the ice. Once an eagle came and scooped up a silver carp flopping around on the ice. Incredible.
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I'll eat carp when fish fly.
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