I experament alot, or did at one point before I was married. It was through all that, I learned how to be a good fish keeper. I am really kicking around the idea of saltwater, and more then likely going to try seawater. I found a place in NJ that sells nurse sharks, but they need like a 300g tank!! So much for that idea, but maybe in the next house.
I think I am going to set up a salt water tank, go to the docks and catch me a fish!! When I was a kid we would get fish from the creek and put them in a jar. Of course they did not last long, after all it was a jar, but the idea is the same here I think.