Prosopium cylindraceum (Pennant, 1784) .

Round Whitefish. 56 cm (22 in) TL (Mecklenburg et al. 2002). In Asia, west to Yenisei River and southward to Kamchatka; throughout Alaska and British Columbia eastward across arctic Canada and southward to Connecticut (Mecklenburg et al. 2002). Some populations are anadromous and enter brackish waters of river deltas and estuaries (Reist in Coad and Reist 2018).