Walleye

Sander vitreus or the Walleye is a fish adapted to seeing in low light conditions through the tapetum lucidum in its eyes which helps reflect light, giving it the appearence of a blank stare, or a 'walleyed' look for which it is named. They eat a variety of prey, typically invertebrates when young and moving onto larger prey like perch and minnows as they mature. While the Walleye is not in any danger of extinction, many states have regulations in place that limit the size of Walleye that are allowed to be kept when fishing, since they are very popular commericially in restaurants and in sport fishing due to their proliferation.