Fish weirs are structures built in rivers or streams to catch fish. They are typically made from natural materials like wood, stones, or reeds, and are designed to funnel fish into a specific area for easier capture. Fish weirs can vary in size and shape, depending on the location and the type of fish being targeted. These fishing tools have been used by various cultures around the world for thousands of years, including Indigenous peoples in North America. Fish weirs are often placed in shallow waters where fish are known to swim, making them an effective method for sustainable fishing practices.