There are several types of Fish food available in pet shops and most fish prefers to eat a food that gives fishy smell. While buying fish food from the market please ensure the date of manufacture and expiry date if any. In home aquarium the fish should only be fed once in day. Because to maintain the constant health of fish maintenance ration is required. It is better to feed too little than too much. Shortly after feeding, there should be no accumulation of food remaining on the bottom of aquarium. If you are providing live food like Tubifex then give them in a porous cup fixed in the front glass after proper treatment. Dried Tubifex and Daphnia powders also can be given to the fishes after ensuring the genuine quality.