I was inspired by this small nano-aquarium done up by a colleague. There was the usual aquarium plants and mosses such as the Anubias but I saw an Adiantum in the water too! Wow, that is new to me in that I do not know the fern can grow under water. There are a couple of small guppies in the tank, and for a tank of this size, I do think it is wise to keep smaller and few fishes in order to reduce the amount of maintenance work.