I went to PetSmart today to get a few pond snails to feed my puffer. They didnt have any, so I bought 5 small crickets instead. I dropped the 5 into my 20gal and watched to see what would happen. My tanks has 3 tiger barbs, 3 zebra danios, a guppy, spotted puffer, 2 otos and a kuhli loach. Also...