If fish could get from one side to another and it was big enough could see some dwarf mbuna in it with a male holdin each hexigon as a territory.
The link doesn't seem to work for me on my phone at least and redirects me to the playstore. Its a good find and ive seen something like it before.
Come and see the forum if youre at your computer. http://www.aquariumadvice.com/
you can even use your browser!