How to Feed a Frog in an Aquarium


Adult frogs are carnivores -- their diet consists entirely of animal proteins. For frogs in the wild, this diet includes insects, fish, other frogs and various other animal prey small enough for the frog to swallow. Feeding your frog in an aquarium at home requires use of dietary supplements and commercially available insects or feeder fish.

Terrestrial and Semiaquatic Species

Use live food for all species of terrestrial and semiaquatic frogs. Most frogs would rather starve than eat a dead animal or fish. Crickets are widely available and inexpensive, and can be easily gut-loaded -- given food before being given to the frogs. Sprinkle the crickets with dietary supplement powder for reptiles and frogs to ensure that your frogs receive adequate nutrients.


  • Limit the size of feeder insects by choosing specimens that are not wider than your frog's mouth is wide.

Many large species of toads and frogs have been known to eat mice. If you choose to offer mice to your frog, do so only rarely. These are extremely fattening, and over-feeding with mice can cause health problems. Remove uneaten food in the morning if you feed at night, or remove food at night if you feed in the morning, to prevent mold and decay. Remove a live mouse immediately if your frog refuses the prey.

Aquatic Species

Frogs who spend the vast majority of their lives in water are not adept hunters on land. Aquatic frogs require that you feed them in the water. Place a clean plate made of terra-cotta or similar material on the bottom of the frogs' tank so they don't have to forage for the food in the aquarium gravel, and place food on this plate. Offer aquatic frogs these foods:

  • Live guppies or other livebearer fry
  • Frozen or freeze-dried brine shrimp, bloodworms, glassworms, krill or baby shrimp
  • Commercially available frog pellets
  • Frozen beef heart
  • Chopped-up earthworms or night crawlers in bite-size pieces

A healthy frog diet includes a variety of these food types. To prevent a mess, draw these foods up into a turkey baster and squeeze them onto the underwater plate. As with land frogs, remove uneaten food daily to prevent water contamination.


  • Frogs will not always accept food every day, but a frog who does not eat for longer than five days may need veterinary attention. Consult a herpetologist -- a reptile scientist -- before assuming that your frog just isn't as hungry as she used to be.

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