from the notorious heron, or the hated egrit? i never thought i would see the day but since its been too cold for my dog to be outside, i came out to my pond with ALL my goldfish and koi gone except for my 3 bigger ones. n they STILL got injured, i can see scales missing at the gill area. SUX! theres now a chicken wire fense over my entire pond now. ugly but keeps my few koi alive.