Marine Aquarium 3.3 is the newest version. Please go here for the announcement and download link.
Marine Aquarium 3.2
April 5, 2012
To anticipate questions:
1. Zebra Morays have no teeth, and are suitable for many marine aquariums.
2. The regular "breathing" is normal - they would die without it!
3. He's often shy, and hiding deep in the cave. Sometimes you see him, sometimes not. (For this reason, Forum members have named him Harvey, after the movie of that name.)
4. This version now includes an installer. It will recognize your MA3 Key Code.