I'm looking into buying a fish tank in the game but I have no Idea what it does, can someone explain to me what a aquarium does exactly.
Aquariums aren't really anything too complicated, they simply provide a display for the fish you catch! ((': Depending on the aquarium you have, you can place a certain amount & certain type of fish within each aquarium. They'll usually just swim around in their tank, but are awfully cute to look at! :')