The widescreen version of the Marine Aquarium allows you to have 8 fish instead of 7. The "widescreen" fish chosen from the pop-up menu will only come into play when you've got a 16:9 widescreen Aquarium on your screen. In addition to the extra fish, you will also note that the widescreen version has some extra (purple) coral, the bubble column on the right instead of left, and a completely different (older) version of light reflections on the coral and sand.
Jay
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