4242 Isopsetta isolepis (Lockington, 1880) Pleuronectidae Righteye flounders Pleuronectinae Pleuronectiformes Teleostei Butter sole Eastern Pacific: Bristol Bay in the southeastern Bering Sea and Amchitka Island (Aleutian Islands) to Ventura, California, USA. UBC 550051 53 N 131 W Isopsetta isolepis AMNH 58930 Isopsetta isolepis AMNH 2682 Isopsetta isolepis UBC 560084 48 N 123 W Isopsetta isolepis UBC 590530 49 N 122 W Isopsetta isolepis UBC 810025 48 N 122 W Isopsetta isolepis UBC 810020 48 N 122 W Isopsetta isolepis UBC 660090 53 N 132 W Isopsetta isolepis UBC 560520 49 N 123 W Isopsetta isolepis UBC 560010 53 N 132 W Isopsetta isolepis UBC 550051 53 N 131 W Isopsetta isolepis UBC 620093 54 N 129 W Isopsetta isolepis UBC 610391 54 N 131 W Isopsetta isolepis AMNH 51403 1972 Isopsetta isolepis AMNH 46491 1978 Isopsetta isolepis AMNH 46492 1978 Isopsetta isolepis AMNH 46493 1978 Isopsetta isolepis AMNH 46494 1978 Isopsetta isolepis