I was trying to fetch from the internet some cool ideas of aquariums. And this was what I found, the Octopus Studios Modular Fish Tank.
Octopus Studios Modular Fish Tank (image from weburbanist.com)
In this fish tank, the fishes can freely move from one tank to another. Fishes can ascend to the higher tank or descend also.
Isn’t this a good idea to have? What do you think?