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You are here: myPetSmart.com > Care Guides > Fancy Goldfish Nutrition and Maintenance

Fancy Goldfish

Experience Level: Beginner

fancy goldfish in aquarium

Nutrition & Maintenance

• Choose a flake or pelleted food of the appropriate size for your goldfish as its staple diet.

• Sinking foods are recommended to prevent gulping air at the water surface when the goldfish are eating. This will help prevent buoyancy abnormalities.

• Feed your goldfish as much food as they will consume in three minutes, twice a day.

Maintaining a healthy environment for your goldfish is an ongoing commitment. A newly set up aquarium requires more frequent monitoring with weekly water testing and changing if necessary. Once the water quality is stable, you can keep your aquarium in great shape with minimal effort by following this schedule:


Maintenance Schedule  

Feed fish twice daily. 

Check water temperature and general health of fish.


Remove 10% of the water and replace with dechlorinated water. 

Test water quality in new aquariums.

Scrub glass to remove algae, if necessary.


Vacuum gravel and replace 25% of water with dechlorinated water. 

Test water quality in established aquariums.

Perform filter maintenance (i.e., replace filter cartridge, replace carbon, rinse pre-filter, etc.)

Scrub algae from tank and prune live plants, if necessary.


Always add a dechlorinator or water conditioner to tap water before adding it to the aquarium. Do not use soaps or detergents to clean aquarium or decor, since they are toxic to fish.

Always wash your hands before and after handling fish or cleaning the aquarium.