Pond problem
By Bcturk
IL,
United States 
I have a 1200 gallon pond in my back yard with Koi and Goldfish in it. Today, in the stream, I found small hard shell bugs. They are black and about 1/8 of an inch. they are all over the stream area of the pond. Any idea what they can be, and if they are harmful to my pond?
11 Sep, 2008
I expect they are water Beetles, They eat Smaller pond creatures like Daphnia, and probably would eat very young fish. There are some much larger Water Beetles that are Fish Killers
12 Sep, 2008