Freshwater mussels are used as host animals for the cultivation of freshwater pearls. Fishkeepers often keep tropical fish in freshwater and saltwater aquariums. Aquatic plants have adapted to live in either freshwater or saltwater. It inhabits primarily lowland freshwater and brackish wetlands. Tony is seen many times throughout the show engaging in both freshwater and saltwater angling. The lake is home to 75 species of freshwater fish. Numerous molluscs also live in freshwater and terrestrial habitats. Loons nest during the summer on freshwater lakes and/or large ponds. Aquatic respiration in Australian freshwater turtles is currently being studied. Archaeopterodactyloidea obtained food in coastal or freshwater habitats. Purified water is used in freshwater and marine aquariums. Myxozoans can live in both freshwater and marine habitats. Fish, generally freshwater varieties, are widely eaten. Copepods are a group of small crustaceans found in ocean and freshwater habitats. The region also provides habitats to hundreds of freshwater and terrestrial animal species.