First up, Aquatic Life is a great screensaver - probably the best aquarium I have seen on a TV.
I spend way too much time looking at it - it is a very sticky feature - not sure if Roku product managers appreciate this...
Suggested improvements:
1. Allow the user to specify the fish. E.g.if I want a tank full of clown fish I could select this. The number of fish would be limited to ensure the CPU could handle the processing.
2. Allow the user to change the blue background. Something like the pictures of plants you can stick behind real tanks.
3. Let the eel out of the cave. Be very cool it it only happened very rarely.