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Monday, June 24th, 2024

Breaking News for

Sportsmen Since 1967

Monday, June 24th, 2024

Breaking News for

Sportsmen Since 1967

Max Wolter Wisconsin DNR Fish Biologist

Ask a Fisheries Biologist: A look at Wisconsin’s freshwater shrimp

I have talked with many anglers who have spent time fishing lakes in North Dakota and South Dakota. They often return crowing about some of the fisheries built there, with a prey base of ‘freshwater shrimp.’
So what are freshwater shrimp and how are they special?

Ask a Fisheries Biologist: A look at Wisconsin’s freshwater shrimp Read More »

Ask a Fisheries Biologist: Mapping fish species movement

Wisconsin is home to more than 160 fish species. Of those, anglers routinely target only one or two dozen of them, leaving a whole lot of rare species that anglers do not often see. 
DNR biologists document where these rare species occur throughout Wisconsin and have “distribution maps” that show the waters where we have observed each species. Wisconsin fish surveys have gone on for more than 100 years, and as a result, we have a good idea where different species occur and the maps do not change much. 

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Ask a fisheries biologist: Details from a Chippewa Flowage fish survey taken by Wisconsin DNR team

The Hayward DNR fish team ran a brief netting survey on the east side of the Chippewa Flowage this spring to gather some quick data on the status of black crappies, northern pike, and walleyes, though the timing was better for crappies than other species. We are able to compare this year’s results to past surveys to determine how the fishery has changed over time.

Ask a fisheries biologist: Details from a Chippewa Flowage fish survey taken by Wisconsin DNR team Read More »

Ask a fisheries biologist: Wisconsin’s native, non-native species

This week, DNR Fish Biologist Max Wolter discusses our native species, and those that are not native.
For Wisconsin anglers, brook trout, lake trout, smallmouth bass, and bluegills are some of our most popular native fish species. They have beloved roles in Wisconsin’s fishing culture and anglers get excited to chase them in local waters. However, there are parts of the world where these species are not supposed to be, and they have a very different reputation.

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Ask a fisheries biologist: What are “triploid” fish?

Stocking a new fish species into a lake can change it forever, particularly if the stocked fish begin reproducing. In those scenarios, it might never be possible to get rid of that new species. We have seen that issue in some lakes with the (presumed) illegal stocking of northern pike.
Fisheries scientists, however, have figured out a way to stock a ‘triploid’ fish that will only be in the waterbody temporarily.

Ask a fisheries biologist: What are “triploid” fish? Read More »

Ask a fisheries biologist: Diet overlap among game fish

The diet of predatory fish is always a topic of interest for anglers, though for varying reasons. Anglers chasing muskies might want to understand the fish’s diet to better target it with their presentations. Other anglers might have concerns about predatory fish eating too many of the other fish they want to target, such as panfish and trout, etc.

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Ask a fisheries biologist: Research illustrates the futility of trying to release bow-shot fish

Bowfishing is a popular practice, with at least some legal opportunities in all 50 states.
Unlike hook-and-line angling, bowfishing does not lend itself to the release of fish. The practice of attempting to release a fish shot by bow is not legal in most states, including Wisconsin, and recent research illustrates the futility of trying to release bow-shot fish.

Ask a fisheries biologist: Research illustrates the futility of trying to release bow-shot fish Read More »

Ask a Fisheries Biologist: What do we learn from a species count during surveys?

After ‘what’s the biggest fish you got?’ the next most common question we get about surveys might be, ‘How many different species did you get?’ I appreciate that people share a fascination for fish diversity. Getting surprising fish in surveys is a favorite part of my job.

Ask a Fisheries Biologist: What do we learn from a species count during surveys? Read More »

Ask a fish biologist: Fishing clear ice is tricky

Ice fishing conditions are different from what we experienced last year. Last year there was ice on many of the small lakes when we received a big dumping of snow. That led to slushy conditions, and the insulating nature of snow made it difficult to build more ice.
Walking was not easy in many places, and in some cases, driving was not an option. Anglers still managed to go fishing, but many seemed to consider it almost a lost season.

Ask a fish biologist: Fishing clear ice is tricky Read More »

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