Hi Bud,
You might want to try lodging your suggestion via the in game Support, the settings wheel/cog icon just under lives, then ‘help and support’ button.
Very rarely do Fishdom developers read these posts, too busy maybe.
I agree with your suggestions, yet changes to Fishdom are rare and few between.
On an iPad, the aquarium icons are reasonably spaced, so I don’t have an issue with them.
Good luck with your suggestion, perhaps a device with a bigger screen would be more suited for Fishdom, if money is no object.
Take care, bye
