A yabby is a type of freshwater crayfish found primarily in Australia. It is known for its distinctive blue-green color and can grow up to 15 centimeters in length. Yabbies inhabit rivers, lakes, and ponds, often burrowing into the mud to escape harsh conditions. They are an important part of the aquatic ecosystem, serving as both predator and prey. Yabbies are popular in recreational fishing and are often used as bait for larger fish. They are also farmed for food, with their sweet, tender meat being a delicacy in various cuisines. Their life cycle includes a unique breeding process, where females carry fertilized eggs until they hatch.