Allison Little, a middle school assistant principal from Anchorage, has been fishing on the Kasilof River her entire adult life, so she’s used to seeing wormy parasites coiled up in fish on occasion.

In this video, we discuss the prevalence of worms and parasites in fish, focusing on surf perch, where it's common to find one or two worms in every five to six caught. While certain types of fish are ...