Thysanopsetta naresi is a species of flatfish in the large-tooth flounder family, Paralichthyidae. It is the only member of its genus Thysanopsetta . Thysanopsetta naresi is a demersal fish that lives in temperate waters at depths of between 90 and 170 metres (300 and 560 ft). It can be found in the southeast Pacific Ocean, off the coast of Chile, and in the southwest Atlantic Ocean in the Patagonian Falkland region. It grows to around 15.1 centimetres (5.9 in) in length.