A friend went to fish Lake Goodwin and caught a few trout.When gutting them he found the entire cavity filled with small worms kind of like maggots.He has not seen this before so he just thru the fish away even the ones that didnt have the worms.What would cause this and is there a problem with the fish there.Makes me want to bypass Goodwin.Is this worm thing common?? Anyone found the same thing in their fish before?.