ok, I got my green pufferfish and I wanted to see how they would do with the rest of my fish so I put them in the large aquarium with my tetras, guramis, and parrotfish. They get along with the rest of my fish great. and they eat the flake food really well, I have had them for about three weeks or so and are as healthy and happy as could be. Everyone has been telling me that I have a miracle aquarium! lol . ps. I added aquarium salt to the whole aquarium and they are all doing great!