Silver carp found for the first time in St. Croix River

  • Jon Jordan
    Keymaster
    St. Paul, Mn
    Posts: 6005
    #1681918

    From today’s Pioneer Press.

    Invasive silver carp found for the first time in St. Croix River

    By Dave Orrick | [email protected] | Pioneer Press
    PUBLISHED: March 16, 2017 at 2:41 pm | UPDATED: March 16, 2017 at 7:21 pm

    For the first time, an invasive silver carp has been captured in the St. Croix River.

    The carp, one of several invasive species of so-called “Asian carp,” was caught Friday, March 10, by a commercial fishing boat, according to the Minnesota Department of Natural Resources, which announced confirmation of the catch Thursday.

    Silver carp are notorious for their proclivity to leap out of the water when boats approach. They’re also regarded as a major threat to native species and the state’s deep love of fishing.

    But St. Croix lovers shouldn’t fear the carp-pocalypse quite yet.

    The fish was found near the confluence of the St. Croix and the Mississippi rivers at Prescott, Wis. Silver carp already had been found farther upstream in the Mississippi,, and biologists have long suspected fish would swim unimpeded up the St. Croix and be detected sooner or later.

    Bighead carp — another prominent invasive Asian carp — have been found in those waters as well.

    “This news is disappointing but not unexpected,” said DNR invasive fish coordinator Nick Frohnauer. “The silver carp was captured within viewing distance of the St. Croix’s confluence with the Mississippi River. In 2014, two silver carp were found in the Mississippi only a short distance upstream from where the St. Croix and Mississippi meet.”

    Biologists have not yet uncovered evidence of a reproducing population of either species in the metro waters — a key distinction in their strategy to slow their invasion.

    “The location where the carp were captured is a well-known over-wintering area for several species of fish,” Frohnauer said in a news release. “At this time, it is hard to predict if these individuals would have moved (farther) upstream the St. Croix River, or back into the Mississippi River when water temperatures warm up in the spring.”

    The silver carp caught on the St. Croix measured 33 inches long and weighed 13 pounds. One bighead carp was also caught by the commercial angler, who was working with a DNR fisheries biologist, the DNR said.

    Once the ice clears, DNR workers and commercial anglers plan to survey for additional invasive carp near Prescott.
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    The DNR will also sample at the Allen S. King Power Plant near Bayport, where bighead carp have been caught in the past. A commercial angler netting under the ice near the Bayport marina earlier this year did not catch any invasive carp.

    Farther upstream, the dam at Taylors Falls, Minn., is thought to be an adequate barrier to prevent the carp from penetrating deep into eastern Minnesota and northwest Wisconsin. Along the Mississippi, however, dams from St. Paul south have locks used for boats — a system that the carp could use as well.

    The Minnesota Aquatic Invasive Species Research Center at the University of Minnesota is testing carp deterrents in Mississippi locks and dams. Biologists have installed acoustic speakers at Lock 8 and modeled flows through the gates at dams 2 and 8.

    According to the DNR: Invasive carp have been progressing upstream since escaping into the Mississippi River in the 1970s. The large fish compete with native species and pose a threat to rivers and lakes.

    Invasive carp captures must be reported to the DNR immediately. Call 651-587-2781 or email [email protected]. Take a photo and transport the carp to the nearest fisheries office or make arrangements for it to be picked up by a DNR official.

    To learn more, visit mndnr.gov/invasivecarp, and attend the upcoming invasive carp stakeholder forum Wednesday, March 29, at the Minnesota Valley National Wildlife Refuge visitor center in Bloomington from 9 a.m. to 12:30 p.m. For additional information about the forum, contact Nick Frohnauer, DNR invasive fish coordinator, 651-259-5670, [email protected].

    FishBlood&RiverMud
    Prescott
    Posts: 6687
    #1681926

    Yessir, two silvers.

    I talked to the guys who caught them last weekend.

    Brian Klawitter
    Keymaster
    Minnesota/Wisconsin Mississippi River
    Posts: 59992
    #1681933

    Andy, a second hand source at the DNR said it was a silver and big head. I wonder if the guy you talked to meant 2 “asian carp”.

    Although it takes more then 1 male and one female carp to start establishing a breeding permanent population, I sure don’t like hearing there are any silvers in our waters.

    I’ve always said they would be here by now if they were coming, but either way there isn’t a way to stop them. Look at the common carp.

    Jon Jordan
    Keymaster
    St. Paul, Mn
    Posts: 6005
    #1681936

    One silver, one big head. Pics on kspt.com.

    -J.

    jstiras
    Posts: 88
    #1681946

    FYI, the pic from the story on KSTP.com are not fish from this haul. That is an AP photo of a bighead carp and grass carp. The haul last week did catch one bighead carp and one silver carp, a photo of the latter was posted on the news release.

    Joel

    Brian Klawitter
    Keymaster
    Minnesota/Wisconsin Mississippi River
    Posts: 59992
    #1681959

    Thanks for the clarification Joel. )

    FishBlood&RiverMud
    Prescott
    Posts: 6687
    #1681971

    Andy, a second hand source at the DNR said it was a silver and big head. I wonder if the guy you talked to meant 2 “asian carp”.

    We had that conversation last sunday I believe.

    Seiners specifically said they have not caught a bighead this winter, but they did just catch their first two silvers.

    Immaterial… We’ll go with what the news reports. No biggie

    mplspug
    Palmetto, Florida
    Posts: 25026
    #1681978

    I’ve always said they would be here by now if they were coming, but either way there isn’t a way to stop them. Look at the common carp.

    Don’t worry, global warming is coming to make your waters more suitable for them.

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