Creatures From the Brown Lagoon

You saw the trailer, now catch the rest of the video from uprising fly fishing:

Local residents in Atomic City, Idaho (near the world's first nuclear accident site) have become possessed by freakishly aggressive carp. These carp will pound flies in skinny water, then jump out of the water and cartwheel when hooked. Mortals can not resist their atomic tug power.
More carp action at uprisingflyfishing.com

Maybe this should be on the next F3T?