Hi,

Congratulations for the aquarium.

Here's one more tip for the wishlist.

Today's situation :
Fishes are moving in the tank and they turn around when they are outside the screen.

What I suggest :
With a new option, a fish could change for another type of fish when out of the screen. With this invisible operation, there can seem to be more than 7 fishes in the tank. And we could see, randomly, all the available types of fish without having to get through the settings.
I know it's not very realistic but all the fishes are so nice that we like to see all of them but without having to set the soft all the time.

Just an idea....