Are you perhaps confusing the two different .scr file names?
Downloading MA3Beta.zip from fish-byte.com will always give you the latest beta that Jim has available, - currently, Beta10a, (T413.3.0.8057).
The extracted screensaver file will always be MA3Beta.scr ..... This currently has the moving clams.
Check out....
https://www.feldoncentral.com/forums...?t=4385&page=3
Downloading from SereneScreen.com will always give you the latest 'Installer' version available, - currently Beta9M, (T302.3.0.1735)
The installed screensaver file will be MarineAquarium3.scr ...... This version does NOT yet have moving clams.