Bobad,
The Gambusia seem to be in every ditch that holds water in East Texas...but together with grass shrimp, I don't believe they contribute ssignificantly to the food chain, contribue, yes, but significantly no.
I went out to catch some grass shrimp this weekend but they were all small, but it gave me an idea to use a fly imitating the grass shrimp, called a scud...man did that ever work on my fish! Small bass, BG and even a small HSB picked off the scud worked along a weed edge. I'm very glad you mentioned it. Thanks.
