Invertebrates Find out where these animals are found, how they can be identified and what can be done to protect them.photo_cameraOpen description A purple copper butterfly (Paralucia spinifera) on a leaf in Walang, NSW closeClose descriptionImage Credit: David Roma/DCCEEW Freshwater mussels Freshwater mussels are large, brown-black bivalved molluscs that live on the bottom of streams and lakes, sometimes in dense beds containing thousands of shells.east Purple copper butterfly The endangered purple copper butterfly is one of Australia's rarest butterfly species. It is also known as the Bathurst copper butterfly.east