The Australian Freshwater Crayfish is also known as the Yabby, which is a five-letter word. It is a species of freshwater crustacean found in Australia and New Zealand. They are usually found in rivers, streams, and lakes, and can grow up to 20 cm in length. They are omnivorous, feeding on plants, insects, and other small animals. Yabbies are an important part of the Australian ecosystem, providing food for many species of fish and birds.