👉 Crayfish are small, crustaceans characterized by their elongated body shape and long, thin bodies that can be found in freshwater habitats such as lakes, rivers, and swamps. They have a soft, wriggly texture and are typically dark or brown in color with a distinctive black stripe across the back of their body. Crayfish are known for their ability to feed on a variety of food sources including insects, crustaceans, and small fish.