I have a small pond in my back yard with goldfish.
Every year until a couple years ago, we had a new batch of baby fish.
A couple years ago, we had the pond changed slightly by a professional pond contractor. Since then, we have not been able to raise a single fish past infancy.
They hatch, then die within a couple days...or simply disappear. But, I have found dead ones floating at the sides of the pond.
What could possibly be causing this?
Rob C.