Scientists recently identified a new perch parasite in Leech Lake and Wisconsin's Eagle Chain of Lakes, but they can't say if it's dangerous to humans, perch or aquatic ecosystems. The microscopic parasite...

...and recently was found in a walleye and a northern pike. The parasite was discovered in 1999 in Leech Lake and Wisconsin's Eagle Chain of Lakes. The microscopic organism turns a fillet an opaque white and can be seen only when the fish is filleted...