I HAVE RUN INTO THOSE PARASITES FOR YEARS. A FISH AND GAME GUY TOLD ME THEY WERE HARMLESS AND TO GO AHEAD AND EAT THE FISH BUT WHEN THEY MATURE AND YOU DIG THEM OUT, THEY ARE A LARVA, LIKE A MAGGOT. YOU GO AHEAD AND EAT THEM, I,M NOT. GOOD REASON TO TAKE A GOOD LOOK AT YOUR FISH BEFORE YOU YARD THEM OUT OF THE WATER. DH