Ed Hayes wrote in message . ..
We are going to install a small pond in our backyard.
It will be one of those bio-eco systems that do not require massive
filters and chemicals.
Town code states it can't be over (I think) 18 inches without a fence
around the properity or pond.
We don't want the fence so we want to keep it to a max depth of 18
inches.
These bio-eco systems require fish and I am not sure 18 inches is deep
enough to protect them in our cold winters here on Long Island.
Any ideas or thoughts?

If you go for gold fish... try to get shubunkin. They are more
forgiving in temp varation. I am not a pond person, but from the sound
of it. Temp fluctuation is going to be a problem.
Elodea, plant for fish tank but should be able to get from pond shop
is great for providing fish food and oxygen.

Some tube of something for the fish to hide from the predator.