The plan was simple: test a fish trap in a small creek known for snakeheads. Bait fish were placed inside and the trap was ...

Using a simple homemade trap, he targets fish that have been left behind in a pool. When he checks the trap, he begins pulling out fish one by one, revealing what has been living in the water.

When Martin Perales and Paul Blank go fishing on the Napa River, the fish barely stand a chance. The two men don't use a fishing rod. They use a rotary screw trap — a rotating funnel, 8 feet across, ...