Features:

* The most realistic fish motion and behavior of any virtual aquarium.
* A fiddler crab that cleans the bottom of the aquarium and chases fish.
* Fish have articulated fins, moving eyes, gills and mouth.
* Beautiful shifting light rays, ground ripples, gently waving plants that fish can swim into, soft shadows cast by fish, configurable bubble streams, auto-feeding.
* Add well over a hundred fish (from 18 species), and change settings without having to exit the aquarium.
* Free demo aquarium screensaver contains NO adware or spyware.
* Widescreen formatting, multi-monitor support & much more!

To change options, click on the right button mouse and "ESC" to close.