I would like to see in the new version a few extra features to do with the tank rather than the fish.

I think that it would be good to have a few other tank layouts and designs for the fish including being able to turn the amount of bubbles up or down and have the sound to match.

Also it might be an idea to have a designable tank where people can add in certain pieces of coral.

It would also be good to see the fish interact with their surrounding more - like the clown fish playing in the anename and things like that.