There are many varieties of guppy food. There is commercial guppy food available at pet stores, live food that guppy owners can grow or catch and food available at grocery stores that can be used for guppies.

Flake food is easily available to guppy owners. For their good health, guppy should receive a high-protein flake food at least once a day. When flake food is dropped in the tank, it will swell up. Flakes should swell before fish eat them as guppies can get a swollen stomach if they eat them too soon.

Brine shrimp can be found frozen, flake or as eggs to be hatched. These are very high in protein and should only be given in small amounts.http://www.aquaticcommunity.com/livebearer/guppy.php

Mosquito larvae can be gathered from standing water outdoors during the spring, summer and fall. Mosquitoes can also be attracted to outdoor tubs in the summer that have a small amount of green water or bacteria in it. Larvae can then be gathered with a net. Pet owners should make sure all the larvae are eaten, as they will turn into mosquitoes. Frozen mosquito larvae are also available in store.http://www.guppies.com/index.php?option=com_content&task=view&id=24&Itemid=85

When guppies are small, beef heart, found in a grocery store, can be given to them as food. The heart will have to be chopped, cleaned of fat and sinew and grated frozen. If that is not available, small crumbs of fat-free ham can be given occasionally.

Guppies like peas. Guppy owners can feed their pets a shucked pea. After running the pea under water to help defrost it, they should remove the skin and drop it into the tank. This is considered a treat to the guppy.http://guppyplace.tripod.com/Feeding.html