After we left the visitor center, we drove across the dam and noticed lots of fish in the water. So, being naturally curious, we parked down at the bottom and saw that there were also a few turtles. After we left we saw a building that was titled "Aquarium" so we went in and they had all kinds of fish in large glass aquariums. They were filled with all of the different fish that are here in the Missouri River. We felt really sorry for one particular albino catfish that kept swimming around in slow circles with his mouth opening and closing. Every time he got close to a tiny fish they got away and he just kept going around and around, never getting one bite. After that we went down to the hatchery and watched really tiny baby trout and then out to the larger tanks. There was some fish food that a nice old man was handing out to the kids. Watching the fish attack the tiny morsels was lots of fun. By the way, the weather today is very hot, 96, and I was so impressed that we still managed to get out and do something.