Koura, also known as the freshwater crayfish, is a crustacean found in rivers, lakes, and streams across New Zealand. It is a significant part of the local ecosystem and is known for its distinctive blue-green color. Koura play a vital role in the food chain, serving as prey for various fish and birds. These creatures are nocturnal and primarily feed on detritus, algae, and small invertebrates. Koura are culturally important to the Māori people, who traditionally harvest them for food. Conservation efforts are in place to protect their habitats and ensure sustainable populations in the wild.