Editing Walleye (section)

==Reproduction==
[[File:Walleye larva (8741578944).jpg|thumb|Walleye larva]]
In most of the species' range, male walleyes mature sexually between three and four years of age. Females normally mature about a year later. Adults migrate to tributary streams in late winter or early spring to lay eggs over gravel and rock, although open-water [[reef]] or shoal-spawning strains are seen, as well. Some populations are known to spawn on sand or vegetation. Spawning occurs at water temperatures of {{convert|6|to|10|C|F}}. A large female can lay up to 500,000 eggs, and no care is given by the parents to the eggs or fry. The eggs are slightly adhesive and fall into spaces between rocks. The incubation period for the [[embryo]]s is temperature-dependent, but generally lasts from 12 to 30 days. After hatching, the free-swimming embryos spend about a week absorbing a relatively small amount of [[Yolk#In fish|yolk]]. Once the yolk has been fully absorbed, the young walleyes begin to feed on [[invertebrate]]s, such as [[Diptera|fly]] [[larva|larvæ]] and [[Plankton|zooplankton]]. After 40 to 60 days, [[juvenile (animal)|juvenile]] walleyes become [[piscivorous]]. Thenceforth, both juvenile and [[adult]] walleyes eat fish almost exclusively, frequently [[yellow perch]] or [[Cisco (fish)|ciscoes]], moving onto bars and shoals at night to feed. Walleye also feed heavily on crayfish, minnows, and leeches.