Thaks for the fish tunnel idea...I hadn't thought of that.
I've still got a little way to go before I start adding fish...finish plumbing the pond...add liner and plumbing for the stream...rock border for the pond and stream... plant pond, stream and border... then add fish.
I'm doing all of the work myself so I'm really at the mercy of my work schedule and the weather. My neighbors think I'm crazy, but I have to say I find this incredibly therapeutic (and while they think I'm crazy, they love coming over to see how things are progressing).