One pot, two lives; a planter and a fishtank in one to promote a beautiful example of simbiotic living. While the fish's waste provides nutrients for the plant, the plant filters the water that it is fed to provide clean water for the fish.
A double bowl, so you can discard nut shells, olive and cherry pits, edamame . Place food in top dish and waste goes underneath out of sight and out of the way. The person who thought of this is a genius!