Australia is a country known for its diverse wildlife, including many species of fish. The crossword solutions for the term 'Australia Fish' are Adelaide (8 letters), EMU (3 letters), Perth (5 letters), and OPAL (4 letters). Adelaide is the capital of South Australia and is home to a variety of fish species, including the Murray Cod. The EMU is a large flightless bird native to Australia, and is not a fish. Perth is the capital of Western Australia and is located on the Swan River, which is home to many species of fish. Lastly, the OPAL is a precious gemstone found in Australia, and is not a fish either.