I *may* have mentioned this before but a long time ago, my grandfather had a Mac LC (along with different books and pirated software that unfortunately disappeared a number of years ago), and one of the many things that was on the LC (not on the disks) was an aquarium screensaver. I'm not sure if the background was black or blue, and while the aquarium-themed AfterDark screensaver could've been it, there's still one thing that I haven't seen that would prove or disprove the real thing. Every once in a while, a small stick figure in the back with a "concrete shoe" would fall in the background, which AfterDark doesn't seem to have.

Other than that, you could still adjust the frequency of all fish appearing.

Does anyone know of the screensaver I'm referring to? I'd love to see it again.