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

[mactaz65]

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

[Derik Lee]

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.

[Captain Ed]

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

[rickwv]

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.?