Wisconsin Musky Regulations Quick Reference
Wisconsin 50-inch minimum length limit:
Rice Lake (Barron County)
Namekagon Lake (Bayfield County)
St. Croix River and Lake St. Croix (WI-MN Boundary; Burnett, Polk, St. Croix and Pierce Counties)
Holcombe Flowage (Chippewa County)
Lake Wissota (Chippewa County)
Lake Monona (Dane County)
Lake Waubesa (Dane County)
Lake Wingra (Dane County)
St. Louis River/Bay (Douglas County)
Yellowstone Lake, including the Yellowstone River from the lake upstream to County Hwy F (Lafayette County)
Cauldron Falls Flowage (Marinette County)
High Falls Flowage (Marinette County)
Anderson Lake (Oconto County)
Archibald Lake (Oconto County)
Clear Lake ~ T39N R7E S16 (Oneida County)
Katherine Lake (Oneida County)
Pelican Lake (Oneida County)
Willow Flowage (Oneida County)
Bone Lake (Polk County)
Wisconsin River and its flowages from Lake DuBay Dam (Portage County) downstream to First railroad bridge below the Prairie Du Sac dam (Dane and Sauk Counties)
Lake Redstone (Sauk County)
Chippewa Flowage (Sawyer County)
Chippewa River - Winter Dam to Arpin Dam (Sawyer County)
Grindstone Lake (Sawyer County)
Lac Court Oreilles (Sawyer County)
Whitefish Lake (Sawyer County)
Elkhart Lake (Sheboygan County)
Big Sand Lake (Vilas County)
Little St. Germain (Vilas County)
Long Lake (Vilas County)
Trout Lake (Vilas County)
Twin Lakes, North and South (Vilas County)
Lake Geneva (Walworth County)
54-inch minimum length limit:
Lake Michigan waters north of Waldo Boulevard, Manitowoc, WI; Green Bay, and their tributary streams (Marinette, Oconto, Brown, Kewaunee, Door and Manitowoc Counties)
Muskellunge (Esox masquinongy)
Illustration by Virgil Beck
Common Names: Muskellunge, musky, muskie, ‘lunge, northern muskellunge, maskinonge, tiger muskellunge
(used for the muskellunge/northern pike hybrid).
Meet the muskellunge -- a lean, mean fightin’ machine that is arguably the most sought-after trophy in
Wisconsin. Named the official state fish in 1955, this ferocious member of the pike family is often implicated in
fish stories as “the one that got away.” The muskellunge plays a starring role in Wisconsin’s tourism industry.
Wisconsin offers some of the best muskellunge fishing on the planet; yet it can still take the average angler
more than 50 hours to catch a legal fish. Millions of dollars are spent at lodges, resorts, restaurants, service
stations and sporting goods stores around the state every year by those in pursuit of this elusive fish.
Why do some anglers forsake all other fish for a rendezvous with the musky? Because having a one on the end
of the line is the aquatic equivalent of having a tiger by the tail. The muskellunge will confound the angler with
its aerial acrobatics, one moment leaping completely out of the water, trying to shake the hook, the next lying
on the bottom like an unyielding snag. These
famous fighters will drag the line underneath the
boat or wrap it around the nearest submerged
stump. They crack rods, strip reels, bend hooks,
mutilate baits and do whatever else they can to
escape. Hooking a muskellunge is a first class
fresh-water thrill no angler will soon forget.
Distribution: The lakes and rivers of
Wisconsin’s north are the natural home for
muskellunge, but stocking has expanded the
muskellunge’s original range into the southern
part of the state. The heaviest concentration of
muskellunge is found in the headwaters of the
Chippewa, Flambeau and the Wisconsin River
systems. More than 660 lakes and 48 streams in
53 counties have muskellunge populations
abundant enough for fishing.
Musky populations usually consist of about one adult for every two or three acres; some natural lakes are also
stocked to supplement populations and provide more consistent fishing.
Description:Muskellunge, the largest member of the Pike Family, are long, torpedo-shaped fish with dorsal and
anal fins set close to the tail (caudal fin). The enormous mouth is filled with long, pointed teeth. Markings and
coloration vary from lake to lake, and fish-to-fish, but the species is usually recognized by vertical bars or spots
on a lighter colored background (versus northern pike, which have light spots on a dark background). The
back, head and upper sides are iridescent green-gold to light brown with cream-colored or pearly-white bellies.
The fins are pointed and usually rust colored (northern pike and hybrids have rounded fins). The lower gill
cover and cheek of muskellunge lack scales (northern pike cheeks are fully scaled; hybrid cheeks are fully or
Habits and Habitat: The muskellunge is usually a solitary fish with a relatively small home range, but they
are known to roam more during spawning and when food is in short supply. They prosper in lakes with a wide
range of depths and large beds of aquatic plants, such as pond weeds (“cabbage”), bulrushes, arrowleaf, pickerel
weed, and water lilies, and medium to large rivers with deep pools and areas of slow-moving water. Muskies
are also found in clear, deep lakes with few weeds; larger lakes tend to produce larger muskellunge. Most
comfortable in cool water temperatures (33 to 78 degrees Fahrenheit), the muskellunge can briefly withstand
temperatures up to 90 degrees Fahrenheit.
Lurking around rock bars, stumps, or rocky ledges, or hiding amongst the broad-leaved pond weeds or other
vegetation, the sedentary muskellunge waits patiently for the attack. When a fish swims by, the muskellunge
strikes swiftly, impaling its prey on large canines and then swallowing it head fist. Any species will do, from
minnow to gamefish to other muskellunge, with suckers, perch or cisco being particular favorites. Muskrats,
ducks, mice and frogs also appear from time-to-time in the stomachs of muskellunge. There is a direct
relationship between the size of the muskellunge and the size of their food. Because their stomachs are so large,
muskellunge can consume prey up to 2/3 their own body length (e.g., a 50” musky could handle a 33” meal!!).
This superlative predator relies heavily on sight to capture prey. Muskellunge may have more difficulty feeding
at night or in waters with higher turbidity (murkiness caused by solids suspended in the water).
Life Cycle: Muskellunge spawn from mid-April to late May, when the water temperature rises from 50 to 60 F.
The males and females seek out warm, shallow areas, swimming side-by-side over several hundred yards of
shoreline, depositing eggs and milt simultaneously at irregular intervals over the bottom. Females can lay
between 20,000 and 200,000 eggs a year, with larger females producing greater numbers of larger eggs.
Spawning seldom lasts more than a week. When it’s over, the adults leave the spawning grounds, providing no
parental care to the eggs or young. Muskellunge return to the same area each year to spawn.
The translucent, amber-colored eggs hatch within about two weeks, and the newly hatched “fry” begin feeding
on zooplankton (microscopic aquatic animals) the day after they hatch; after a few more days, they switch to
eating live fish. Young muskellunge are eaten by northern pike, bass, yellow perch, sunfish, certain aquatic
insects and occasionally, other muskellunge. The “fingerlings” will reach from 7 to 13 inches by summer’s end.
They continue to grow rapidly during the first five years of life; males mature in four to five years, at 28 to 31
inches and females mature in five to seven years, at 30 to 36 inches. Adult muskies have no aquatic predators,
but may fall victim to disease, large birds of prey, or people. Muskellunge can live to about 18 years old, but
fish up to 30 years of age have been documented.
Fishing for Muskellunge: Patience is probably the most important item in a musky angler’s tackle box. Other
elements of traditional musky fishing gear include a medium-heavy action7’ or longer casting rod; substantial
level-wind bait casting reel; heavy (50 to 80#) braided spectra fishing line; and a variety of large lures, such as
buck-tails, spinner-baits, jerk-baits, diving crank-baits, and large spoons. During the fall, some anglers also cast
or drift with live bait – usually a white sucker 10–14 inches long.
Muskies lurk near drop-offs, rock or sand bars, weed edges, in weed-covered bays, or in shady areas along
shore. Casting around these areas will eventually reward the persistent angler. Muskies will often “show
themselves” by following a lure back to the boat, without striking. Experienced anglers employ a figure-8
maneuver with the lure at boat-side in an attempt to provoke a strike. Muskellunge generally hit baits that have
considerable “action”, so keep the lure moving and don’t let it rest. When a muskellunge does attack, set the
hook immediately and firmly, keeping the line tight.
Most Wisconsin anglers indulge in muskellunge mania through a practice called “catch and release.” Simply
put, you catch the fish and let it go to be caught another day by another fortunate angler. You’ll be able to enjoy
having hooking Wisconsin’s most fearsome fish and your fishing companion can take a quick snapshot to
document the best "believe it or not" fish story you'll ever tell.
To “catch and release”, reel the fish up next to the boat and remove the hooks quickly with long-nosed pliers, or
simply cut the hooks with a heavy wire cutter. If you prefer, scoop the fish into a large landing net and leave it
in the water next to the boat. Remove the hooks, quickly snap a photo, and slip the fish back into the water.
While they are rarely targeted for human consumption, these long-lived, slow-growing, top-of-the-line
predators can accumulate contaminants such as mercury or PCBs (polychlorinated biphenyls). So, WDNR
recommends that women of childbearing age and children under 15 do not eat muskies. Men (and older
women) should only eat 1 meal per month, (and no more than 6 meals per year from Green Bay).
Management Practices: There are three primary tools used to manage muskellunge in Wisconsin: Protection
of habitat and water quality; stocking; and angling regulations (http://dnr.wi.gov/fish/musky/ ).
Maintaining good habitat and water quality is the first step in any fishery management program. Without good
habitat, other management actions would be futile. Habitat protection for muskellunge is critical if we are to
maintain natural reproduction, allow young muskellunge to survive their early life stages, and to support healthy
aquatic communities that musky depend on throughout their lives. Habitat protection is an ongoing struggle in
the face of increasing lakeshore development and wetland encroachment. Habitat protection measures include
enforcement of shoreline, wetland, and water quality regulations; purchasing and preserving important shorelands and wetlands; and educating property owners about good shore-land management.
Much of the success of Wisconsin’s muskellunge management program can be credited to an excellent
propagation and stocking program. Stocking has been used to establish new fisheries, but most stocking is done
to supplement fisheries where natural reproduction, for various reasons, may be inadequate or nonexistent. State
hatcheries produce large muskellunge fingerlings from eggs which are collected each spring from wild fish. The
cost to produce and stock large musky fingerlings is high compared to other species, and the relatively few fish
that survive to reach large size are worth considerably more. The cost, however, can be justified in terms of the
total value of the recreation and benefits to the economy provided by the fishery. Most anglers who catch a
musky know that the experience is not something that can be measured in dollars and cents! Look up stocked
waters http://infotrek.er.usgs.gov/doc/wdnr_biology/Public_Stocking/StateMapHotspotsAllYears.htm .
Angling regulations, such as size limits, bag limits, and closed seasons are important, cost-effective
management tools. Regulations are designed to allow sufficient numbers of muskellunge to reach a size that
anglers want to catch. In addition, effective regulations can benefit natural reproduction by assuring that
adequate numbers of muskellunge survive to maturity and preferably spawn more than once.
Although the muskellunge has long been considered a trophy fish, in more recent years, musky fishing has
evolved into a sport with a much greater emphasis on quality-sized fish, rather than just quantity. Catch-andrelease is now widely practiced among dedicated musky anglers, and regulations have become more restrictive
in Wisconsin, as well as in neighboring states and Canada. In 2012, the muskellunge length limit was set at 40
inches for most Wisconsin waters, but several waters have more restrictive regulations, such as 45-inch, and
even 50-inch minimum length limits, with one lake catch-and-release-only, all in an effort to meet the desires of
trophy musky hunters.
In this era of widespread catch-and-release, some argue that stricter regulations are not needed because
voluntary release is doing enough for the fishery. Catch-and-release has definitely had positive impacts;
however, even a small amount of harvest can prevent many waters from reaching their potential. A combination
of effective regulations and voluntary catch-and-release of large muskellunge is the best way to realize the full
potential of our waters to produce trophy muskellunge.