Fish, as pets, can be kind of like furniture. Unless you take the time to train your goldfish — which, as I recently found out, you can — your aquarium is basically another television channel. Nothing on cable? Let’s see what the fish are doing. Nonetheless, actually turning fish into furniture strikes me as a little weird.
Can fish be truly happy living as bookends or wall art? I’m not prepared to guess. But if I ever buy my cats the gift that keeps on giving, i.e., a whole bunch of live fish, I think I’ll put them in a good large tank with all manner of hidey holes and plants.