Stop the spread of spiny water flea.

Together, we can stop spiny

Spiny water flea is an aquatic invasive species that poses a serious threat to the ecology and recreational value of Minnesota’s lakes. This tiny invasive zooplankton has a major appetite, which can cause big problems in the food web, particularly for young fish and native fish. 

How you can help

The tiny, spiny water flea can cause big problems for anglers, recreationalists and Minnesota’s aquatic ecosystems. You can help stop the spread of spiny water flea by wiping off and drying your fishing gear when you leave the lake. 

Before you leave the lake

Start by draining all water from your boat and gear, including the bilge, livewell, and bait buckets.

After draining, use a dry dishcloth or towel to:

  • Wipe fishing lines and reels

  • Wipe drained livewells

  • Wipe drained bait buckets 

A recent study by MAISRC researchers suggests that wiping off fishing lines and reels is the quickest way to remove the most spiny water fleas in a limited amount of time. 

Lines, reels, livewells, bait buckets and any residual water pose a risk of spreading spiny water flea from one lake to the next if not properly drained, cleaned and dried. To learn more about how recreational angling gear can contribute to the spread of spiny water flea, visit the research project page.

Watch the video or click below to learn more about spiny water flea, how you can help prevent its spread, and our latest research:


MAISRC | Stop Spiny Water Fleas

Learn about spiny water flea
Learn about spiny water flea research
Stop the spread of spiny water flea.

Use the map below to explore what lakes in Minnesota are already infested with spiny water fleas: