Fish tumors in Anacostia River decline
Tumor rates among catfish in the Anacostia River are down, according to a new report from the U.S. Fish and Wildlife Service (USFWS).But plenty of people do.
Biologists with the agency’s Chesapeake Bay Field Office have studied the brown bullhead catfish for decades as an indicator of habitat status and the success of cleanup efforts. The bottom-dwelling fish is sensitive to contaminants that accumulate in the mud in which it finds its food, often developing liver and skin tumors after exposure to cancer-causing chemicals.
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