Underwater shot off Kikai Island. Large school of shiny silver-colored pygmy sweepers (Parapriacanthus ransonneti), made up of hundreds of fish. The pygmy sweeper (Parapriacanthus ransonneti), a relative of the Japanese seabass (Lateolabrax japonicus), is a nocturnal, carnivorous fish which inhabits reefs and coral reefs and that feeds on zooplankton. Kikai Island, which neighbors Amami Oshima Island, is approximately 380 km south of Kagoshima. It is a raised coral island, which is still rising at an unusually fast rate (an average of 2 mm per year).