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, ...

Jonathan Koehler is working the biggest fish-trapping contraption on the Napa River and finding out good news about Chinook salmon after a historic rain year. This eight-foot-diameter metal funnel ...

Some of the highly endangered fish will hitch a ride upriver; others will return to hatchery at Bonneville Dam ...

Workers were busy building the concrete skeleton of the new Modrow fish trap along the Kalama River on Tuesday. The new trap is nearly twice as large as the original trap. Work began in July on the $2 ...

Researchers at Nagaland University in Lumami, India, recently collaborated with local bamboo weavers to design a low-cost fishing trap composed of plastic and bamboo threads, both of which are easily ...