BTW on the topic of animals eating poop I personally have seen dogs, birds, guinea pigs, corys, GOLDFISH, tetras, cats and others eat their own poop as well as the poop of others we even sell a pill at petsmart to help stop dogs from eating their own poop. AND on the topic of over crowded aquariums I would agree that SB is overstocked but in some cases you can manage it without harm coming to your fish. I also have a overstocked tank but I have tons of extra filtration and do at least 4 5 gallon water changes a week. None of my fish look in the least bit stressed and while I do plan on upgrading to a 75g or so in the next month my fish dont look to worried.