Why Are Bluegill Getting Smaller? A Science-Based Path to Better Fishing

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Published 2021-07-09
The sunfish family of freshwater fish (bluegill and redear to name a few species) might be responsible for "hooking" more people on fishing than any other fish. They're abundant, widely distributed, willing biters and exciting fighters while making excellent table fare to boot. Wired2fish interviewed Minnesota (MN) DNR fisheries biologist Dave Weitzel for a detailed look at the unique biology of sunfish and how reduced harvest of larger fish can significantly improve the size structure of sunfish populations.

Panfish anglers in Minnesota and beyond have shared concerns about reduced sunfish size. Be it the use of powerful fish finder technologies or the rapids spread of information on social media, the pressure on fisheries has never been greater or more effective. The MN DNR's Quality Sunfish Initiative (QSI - wired2.fish/MNDNR-QSI) aims to improve the size structure of sunfish populations on select lakes capable of producing large sunfish through the reduction of daily limits from the statewide 20 fish limit to reduced bag limits of 10 or 5 fish (depending on the body of water).

Weitzel goes into fascinating detail about the life cycle of sunfish and how angler harvest, especially of large male sunfish, can significantly impact size quality. While biologists have conclusive data supporting how to improve sunfish size structure, the MN DNR ultimately manages the state's fisheries to meet angler expectations. Thus far, there has been strong public support for reduced sunfish limits on most proposed waters, with follow-on surveys showing size improvements.

The DNR wants to know your thoughts. Please weight-in on the matter using this online survey (wired2.fish/QSI-Survey) or contact an area fisheries office (wired2.fish/FisheriesOffices). The quality sunfish initiative has also garnered interest from other states seeking to improve sunfish size structure, so don't hesitate to reach out for further information.

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All Comments (21)
  • @penguin12902
    I think it's super smart to make those tighter regs on just certain lakes. It allows people who want those BIG fish, to seek out those low limit lakes. The guys who want a cooler full of average fish can go hit up a lake with standard regs.
  • @ermertaylor2066
    Awesome little documentary. Would love to see more of these types of videos, across different species and regions of the country. 👍🏽
  • @soluteemoji
    Grand Rapids born Biologist here. We are so fortunate for public outreach like this. Look at that view count!! 👀
  • @boogiekush9391
    As a new fisherman my first fish was a bluegill and I have slowly fallen in love with these beautiful and tasty fish, they fight like hell and are the colors on the small ones just makes me happy 🙌🏾 great video and thank you
  • @InTheWoodsToday
    From Grand Rapids, Michigan to Grand Rapids, Minnesota much love and respect. We need much more conservation efforts. Id love to catch the huge Gills my father tells stories about, but even more so, would love to see my own son catch some. 🤙🐟
  • @FishAnything
    Amazing video! I talk about this a lot and I’m glad to see a leader in the industry spreading his this information
  • @stevey4192
    A significant issue for crappie populations is side scanning sonar in the winter. Schools can easily be located that way and fishermen can set up right on top of them.
  • Back in the early 70s, we had a couple bays on the north side of Lake St. Clair, and it was nothing to load up on jumbo bluegill, and yellow perch. But we moved away from Michigan in 1975, and I never returned to go fishing anyways, but in 2009 I moved back, and took my boat back to the bays of childhood memory, and the thick pencil reeds that grew so dense in the those bays were nonexistent except for the edges along the shore of the little islands and weedbeds and sand bars. And they grew so thick that dad would have to use his Rapala knife to cut the reeds off the prop when we left. Really sucks too, because the sunfish and persh had plenty of hiding spots from the pike and muskie that would come through, so they grew massive. Dad said if they're under 10 inches, let them go to get bigger. But the zebra mussels and gobys have really changed things. The mussels are so thick on the river bottom they'll cut your line drifting for walleye too.
  • @rodneygreen9968
    It really sounds like the Minnesota DNR has it well figured out for the Bluegill & Crappie size growth & harvest. Many years ago I fished the lakes in that state. I live in Missouri. I wish that this state had a better program like that. Great Video guys. Keep the Wonderful fishing information coming from the Other States. 👍👍
  • @reelfranco3642
    Saw some behind the scenes footage on Instagram of this, I've been waiting for this one! Awesome!
  • @tuloko16
    Excellent presentation. In my opinion and what i have experienced on the field, education is key. If you take a new angles and tell them “this is the limit because we say so”, they may follow the rule. In fact i noticed that they will try to get up to that limit and take the fish home. But if you educate the angler, they will become more involved and interested on the resources. They also like to share the information they have. And on the social aspect, there is better response when a fellow angler tells you for example “you should release that fish because...”. Versus when the game warden tells them they have to release that fish because its the law or you’ll get a fine.
  • @TheLoojlis1
    Love these types of videos! Keep them coming
  • @michaelsiengo1
    I fish a private farm pond that only me and a couple other people are allowed to fish and yesterday I caught 30 Shellcracker bream that we’re all about a pound and a half each, and of course, released them all… it’s just overfishing, plain and simple. That’s the problem of the decline of all the species of the lakes and especially the oceans,unfortunately
  • @trimmin420
    Yet i still to this day cant find a sunfish large enough to fillet within 40 miles of the Twin Cities.
  • @livin4life
    Great content! Please spread the word about preserving the resources!
  • @kingofsl8891
    Glad to see this at home in north east Minnesota
  • @reedsutter8485
    First thing I taught my kids about fishing was how to identify and release bull males bluegills. I love this explanation. Someday, I’ll catch (and release) my first 10” bluegill. I’ve been fishing for over 40 years in Minnesota and I don’t have one yet. This DNR initiative will help.
  • @oblio10
    I don’t even live in the state of Minnesota but I thought this video was great!
  • @ThePentUpAngler
    Such a GREAT video. Incredible amount of specific information. This Biologist did such a good job. Incredible. Wish I could get him down here to Louisiana to analyze my 10 acre lake. Thanks for creating this video and kudos to you and the Biologist.