Presumably because fish hasn't been updated since 2009 and they expect their fork to become the new standard version.

http://ridiculousfish.com/shell/beta.html

"Welcome to our fork of the fish shell, a command line shell like bash. Its working name is fishfish, but I hope eventually it will just be fish!"

Obvious joke is obvious, but he could have called it the Unno Fish Shell?

Looks interesting. I expect my fingers will be even more confused than ever switching machines now (they've never learned that Alt-3 isn't # on linux or that middle-click isn't paste in Putty)

There's no reason middle-click shouldn't be paste on PuTTY -- it's a configuration option.

That one always bites me at other people's desks; I'd figure out how to reconfigure it if it was mine. But there's always something jarring like that when you switch between similar-but-not-quite-the-same environments.

i've gotten to the point where i can subconciously key off the window chrome to know how to paste. (half my coworkers use xterm, the other half putty.)

It's not called that yet: "Its working name is fishfish, but I hope eventually it will just be fish!"

The ambition is quite reasonable as work on the fish shell itself has petered out, there was a recent dead cat bounce after a long fallow period, but it seems to be back to stasis there.

Well.. they do have quite a list of possibilities to piggy back off ( http://en.wikipedia.org/wiki/List_of_common_fish_names ) that could reduce confusion but still maintain similarity.

I don't believe that's an option for the author as he's known as "fish" around the web. :)

http://ridiculousfish.com/blog/about.html

"ghoti" would be a perfect name for a ridiculous fish, though (http://en.wikipedia.org/wiki/Ghoti)