Hey all, I just got an underwater camera to see what's living in the pond on our property.  The pond is fed by a stream and the water continues on its way in stream-form through drainage pipes, so it's not beyond reason to consider the fish came from upstream and took up residence.  
At some point well in the past, the first owner put trout into this pond but said they never caught any.  Lots of great blue heron activity in our area, so that first group may not have fared well.  These fish are smart enough to survive.   
We'd seen a ton of salamanders but never a fish ... until now!  Wondering if anyone has a clue what kind of fish they might be.  
Here's a link to a short video on youtube: