Red bellied piranha... would have been about 1982.
1st marine aquarium was about 1988, started with a couple blue damsels to cycle the tank (yeah, we used to use cheap fish to cycle... cruel, but I didn't know any better). Once cycled, I added a black voiltan Lionfish. Made quick work of the damsels.
As I recall, that was a 29g tank, with crushed coral over an under-gravel filter plate. I eventually added a skimmer, ran off of a wooden air diffuser. Man, how things have changed.