Snake

Please forgive me if this has been discussed recently but I could use some
advice. We have 2 small ponds with gold fish who are about three yrs. old.
In one of the ponds I have seen a snake. It is small, brownish color with
stripes. There are rocks that we have placed around the ponds. These are
molded ponds. We are in Houston. My question is should I do something about
this, like try to catch the snake. The fish seem alright with it. I don't
know if he stays in the pond all the time or lives under the rocks. Has
anyone had experience with snakes in goldfish ponds and what should I do?
Phyl