I caught a grass carp this past weekend with a crankbait in roughly 4 feet of water. I have caught a couple of them in the past using a fly rod (casting green-colored flies into the grass they were eating), but never had them strike an actual lure.
I always thought they were strict vegetarians, but maybe not. This one had been up at the surface feeding with his buddy a few minutes before, but I hadn't seen him in quite some time. I made a blind cast toward the middle of the pond (trying to catch bass, not grass carp) when he struck. After fighting about 5 minutes, I drug him onto the bank with help from my dad. He weighed 9.9 lbs, and was very happy to get back in the water.
Anyone had a similar experience with these fish? And before anyone asks... yes, I'm sure it was a grass carp and not some other species. :)