Yes, that's Serene Screen. You can get more detail here:
http://www.fish-byte.com/
And the fan site:
http://www.feldoncentral.com/Sachs/index.html
Its available on Windows 2000 and Windows 9X/ME as well.
Also, you should be able to have any 2 fish on the list, not just the trigger and angel.
[ 01 April 2002, 09:38: Message edited by: Sam W ]