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Silver Carp

Silver Carp

Silver Carp are invasive fish that have recently been detected in Wisconsin waters, specifically in the lower Chippewa River near Eau Claire and the lower Black River.

Scientific Name: Hypophthalmichthys molitrix

Physical Characteristics:
  • These deep-bodied, laterally compressed fish are easily recognizable by their silvery coloration when young, developing a greenish back as they mature.
  • They have large, toothless mouths with upturned jaws, tiny scales on their bodies (except scaleless heads), and eyes positioned far forward and downward.
  • Adults typically grow upward of 3 feet long and commonly reach 20 pounds, with some individuals reaching 80+ pounds.

What to know

Habitat Distribution

  • In Wisconsin, they prefer open areas and eutrophic zones of slow-flowing waters, occupying upper and middle water columns.

Key Locations

  • Lower Chippewa River near Eau Claire and the lower Black River.
  • The Dells Dam in Eau Claire prevents further upstream passage in the Chippewa River system, and similar barriers exist in the Black River at Black River Falls.

Specific Spots

  • They avoid main-channel habitat, instead favoring backwaters, tributary streams, main-channel borders, side-channel borders, and areas behind wing dikes.

Silver Carp FAQ

Answers from onWater's species guide.

When is the best time to fish for Silver Carp in Wisconsin?

Spring through fall offers the best fishing opportunities when they're most active, though avoid spawning periods when water levels are rising rapidly as they'll be focused on reproduction rather than feeding. Early morning and evening periods may be most productive when plankton is most active.

How do you catch Silver Carp in Wisconsin?

Traditional approaches focus on baiting rather than lure fishing. The most effective method currently being tested by researchers involves using floating feeders that dispense pelletized algae four times daily to concentrate fish in specific areas, followed by netting - this suggests Silver Carp respond well to...

What do Silver Carp eat?

They are planktivorous filter feeders, consuming both phytoplankton and zooplankton using specialized gill rakers, which puts them in direct competition with native fish species for food resources.

Where do Silver Carp live in Wisconsin?

In Wisconsin, they prefer open areas and eutrophic zones of slow-flowing waters, occupying upper and middle water columns.

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