You can find them using their lips to scrape it off rocks, wood, and glass.
For a larger group, you need to bump up the tank size by at least three gallons of volume per fish.
~ Vitamins: ascorbic acid, vitamin E supplement, niacin supplement, biotin, thiamine mononitrate, pyridoxine hydrochloride, vitamin A acetate, riboflavin supplement, d-calcium pantothenate, vitamin B-12 supplement, citric acid, vitamin D-3 supplement, folic acid, taurine ~ Minerals: calcium carbonate, potassium chloride, ferrous sulfate, zinc sulfate, zinc proteinate, iron proteinate, zinc oxide, copper sulfate, manganese sulfate, manganese proteinate, copper proteinate, manganous oxide, sodium selenite, calcium iodate.