I had a lot of fhm's in my sediment pond at one time but the numbers dwindled down over time. My only predator turned out to be bull frogs. I counted 14 at one time in this small little sediment pond. I know I lost some during high water events where they went downstream to the big pond but still I am sure the bull frogs ate a lot of fhm's. I had no bull frogs in the little pond before I added the fhm's.
