The goldeye, Hiodon alosoides, is a species of fish in the mooneye family (Hiodontidae). It occurs from as far down the Mackenzie River as Aklavik in the north to Mississippi in the south, and from Alberta in the west to Ohio south of the Great Lakes, with an isolated population south of James Bay. It is notable for a conspicuous golden iris in the eyes. It prefers turbid slower-moving waters of lakes and rivers. The fish averages less than 1 lb (450 g) or 12 in (30 cm) in length, but can be found up to 2 lbs (900 g) or 16 in (41 cm) in some lakes.