Hello GameDev people. Since this project started from a thread here, I thought I'd mention the update here.
Waaaay back in 2002, I entered GameDev.net's ASCII Fishtank Mini Contest, and had a lot of fun with it by putting in a bunch of extra modes and cute touches, like a black-and-white postprocessing (lol) filter, including ASCII dirt and scratches. Since stuff-in-a-browser is more convenient than downloading an EXE (particularly for a software toy like this), I'd thought about porting it to Java or something. This year, though, em-dosbox was released, so I ported it to that instead. (Changed Windows calls to pdcurses calls) Anyway, as well as getting it to run in the browser, I added two display modes, several pieces of decor, one torment mode, and even a game mode inspired by Crossy Road. (Floaty Fish!)
Here's Fisharium v1.1! I had trouble getting 50-line mode working in em-dosbox, so I added a 25-line mode.
PS: After searching, I notice there was another ASCII Fishtank Contest here in 2011, but I missed it. Oh well.