Crayfish, also known as crawfish or crawdads, can be found in most of our fresh water sources in Washington. This includes lakes, rivers, and streams. They are known as the bottom dwellers and are often found hanging out on the rocks up to 30 feet below the surface. While several different kinds of crawfish can be found in Washington, the only one native to the area is the Signal Crayfish.
The Signal Crayfish can typically grow up to 6” in length. Their color is found to be various shades of brown, allowing them to blend in with the rocks that we often find them on. Visually, crayfish look similar to a lobster. They have an exoskeleton which they outgrow and “molt” as they grow in size. Crayfish are both predators and scavengers, feeding upon a variety of vegetation, fish eggs, and even smaller fish.