If you own fish and want to get the most out of them, it is very important to give them a good variety of foods. If you like you can give them flake food, but really you should try to vary their diet with some different types of tropical fish food,such as,brine shrimp,blood worms,freeze dried fish food and live fish food.It is best to feed your fish two to three small feedings a day,rather than one feeding. Put in enough food that the fish will consume within 2 minutes.If you over feed your fish this will lead to poor water quality and very stressed fish. If you are going on holiday you might like to invest in an automatic fish food feeder.