[jacovors]

Can anyone please tell me how many fry one Dragon Fly Larvae can eat in a day and how do I get rid of them?
One of my mud ponds are full of them and I everytime I look in the pond I can see one or two sucking out one of my fry.
What should I do?, hope there are more fry than larvae or should I introduce a bigger koi to eat them when the fry are big enough?
Jaco.
P.S. Will post pics this afternoon.