Their small size often make this fish difficult to identify. This family contains about 1800 species, about 400 of these are in Australia, most of which are marine with only 6 tropical Australian species restricted to freshwaters.
YellowfinGoby Acanthogobius flavimanus Schlegel
Other names: None
Description: Can reach up to 30 cm.
Distribution: Is mainly established in the marine waters of Sydney Harbour and Botany Bay, however has been recorded in freshwater reaches of the Hawkesbury River, New South Wales.
Natural History: This species is native to inland waters of Asia, the pacific north west and the Pacific western central regions. It was first accidentally introduced into Australia around 1971 from Japan.