The Derwent flounder (Taratretis derwentensis) is a flatfish of the family Pleuronectidae. It is a demersal fish that lives on sand and mud bottoms in shallow coastal waters, at depths of between 3mand50mm (10feetand160feetm). Its native habitat is the south-western Pacific, particularly the south-east coast of Australia, from New South Wales to South Australia and Tasmania. It grows to at least 9cm (04inches) in length, and can reach up to 12cm (05inches).[1] [2]
Although the Derwent flounder is listed as a minor component of the Tasmanian commercial flounder catch, its small size makes it undesirable, and any bycatch would probably be discarded. It is also recorded as bycatch in prawn trawling in South Australia.