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How come only certain fish are on a consumption advisory? wouldn't all species be affected by contaminates in the same water sy

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  • How come only certain fish are on a consumption advisory? wouldn't all species be affected by contaminates in the same water sy

    How come only certain fish are on a consumption advisory? wouldn't all species be affected by contaminates in the same water system.? Example, a river not far from where I live has a consumpton advisory on walleye, in the reservoir it feeds. Channel catfish greater than 17" how come all species aren't affected, and regardless of length.?

  • #2
    Not all fish have the same amount of fat. Toxins like mercury get trapped in the belly fat of fish. Therefore fish that has a higher percentage of belly fat may be on the list while another with lett fat may not. www.letsgofishin.us

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    • #3
      You have to take in to account the prey species that a fish feeds upon. Most of the time what the issue is is bio-accumulation of contaminants and toxins. Though these get stored typically in the fat of the fish that is in part dependent on what it is eating.

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      • #4
        Length is relative to age & forage abundance Life histories of the species & the contaminant itself are very important in the determination Also learn how humans handle the listed contaminant

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