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Fattening Them Up for the Kill - A Guide to Feeding Your Pond Fish

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5 min read
Fattening Them Up for the Kill - A Guide to Feeding Your Pond Fish image

Best Pond Fish Feeding Supplies to Buy in October 2025

1 TetraPond Koi Vibrance Soft Sticks, Floating Pond Fish Food for Koi Fish and Ornamental Goldfish, 2.42 Pounds

TetraPond Koi Vibrance Soft Sticks, Floating Pond Fish Food for Koi Fish and Ornamental Goldfish, 2.42 Pounds

  • IDEAL DIET FOR KOI, GOLDFISH, & OUTDOOR FISH SPECIES.
  • BOOST ENERGY AND HEALTH WITH DAILY FEEDING FOR LONGEVITY.
  • SOFT FLOATING STICKS ENSURE EASY EATING AND CLEAR WATER.
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$19.49 $28.29
Save 31%
TetraPond Koi Vibrance Soft Sticks, Floating Pond Fish Food for Koi Fish and Ornamental Goldfish, 2.42 Pounds
2 TetraPond Variety Blend Fish Food to Enhance Color and Vitality

TetraPond Variety Blend Fish Food to Enhance Color and Vitality

  • PREMIUM BLEND BOOSTS VITALITY FOR KOI AND ORNAMENTAL GOLDFISH.
  • SOFT STICKS ENSURE EASY DIGESTION FOR ALL POND FISH SIZES.
  • ENHANCES COLOR AND HEALTH FOR VIBRANT, ACTIVE FISH YEAR-ROUND.
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$12.25
TetraPond Variety Blend Fish Food to Enhance Color and Vitality
3 Purina AquaMax Pond Fish 2000 | Floating Pond Fish Food for Ponds and Lakes | Bluegill Fish Food, Game Fish Food, Catfish, Koi & Bass Food, 50 Pound (50 LB) Bag

Purina AquaMax Pond Fish 2000 | Floating Pond Fish Food for Ponds and Lakes | Bluegill Fish Food, Game Fish Food, Catfish, Koi & Bass Food, 50 Pound (50 LB) Bag

  • COMPLETE DIET FOR VARIED POND FISH, ENSURING OPTIMAL HEALTH.
  • FLOATING PELLETS SIMPLIFY FEEDING AND MINIMIZE WASTE.
  • HIGH PROTEIN SUPPORTS MUSCLE GROWTH WITH MINIMAL FAT.
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$72.99
Purina AquaMax Pond Fish 2000 | Floating Pond Fish Food for Ponds and Lakes | Bluegill Fish Food, Game Fish Food, Catfish, Koi & Bass Food, 50 Pound (50 LB) Bag
4 TetraPond Pond Flakes, Complete Nutrition for Smaller Pond Fish, Fish Food for Goldfish and Koi Fish, 6.35 Ounces

TetraPond Pond Flakes, Complete Nutrition for Smaller Pond Fish, Fish Food for Goldfish and Koi Fish, 6.35 Ounces

  • NUTRIENT-RICH FORMULA FOR VIBRANT, HEALTHY GOLDFISH AND KOI.
  • CLEAR-WATER FORMULA KEEPS YOUR POND SPARKLING CLEAN AND CLEAR.
  • COLOR-ENHANCING FLAKES BOOST THE NATURAL BEAUTY OF YOUR FISH.
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$5.99
TetraPond Pond Flakes, Complete Nutrition for Smaller Pond Fish, Fish Food for Goldfish and Koi Fish, 6.35 Ounces
5 TetraPond Spring & Fall Diet Floating Pond Sticks, 1.72-Pound

TetraPond Spring & Fall Diet Floating Pond Sticks, 1.72-Pound

  • PROMOTES SMOOTH WINTER TRANSITION FOR HEALTHIER FISH.
  • EXCEPTIONAL DIGESTIBILITY EVEN IN COLD WATER TEMPERATURES.
  • REDUCES CONTAMINATION FOR CLEANER, HEALTHIER PONDS.
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$15.19 $28.29
Save 46%
TetraPond Spring & Fall Diet Floating Pond Sticks, 1.72-Pound
6 Pond Fish Food Giant Fish Grower Fish Food Aquatic Nutrition 20 lb

Pond Fish Food Giant Fish Grower Fish Food Aquatic Nutrition 20 lb

  • BOOST FISH GROWTH WITH PROVEN MENHADEN FISH MEAL AND NUTRIENTS!

  • REGULAR FEEDING PROMOTES HEALTHY FISH STOCKS AND QUALITY OBSERVATION!

  • NUTRIENT-RICH FEED ENHANCES PLANKTON GROWTH, OXYGEN, AND FISH HEALTH!

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$50.95
Pond Fish Food Giant Fish Grower Fish Food Aquatic Nutrition 20 lb
7 Tetra PondFood Premium Diet Koi & Goldfish Food, 1.25 lb

Tetra PondFood Premium Diet Koi & Goldfish Food, 1.25 lb

  • IDEAL DIET FOR KOI & OUTDOOR FISH-BOOST GROWTH AND HEALTH!
  • EASY-TO-DIGEST SOFT STICKS FOR HASSLE-FREE FEEDING.
  • CLEAR WATER WITH LESS WASTE-KEEP YOUR POND PRISTINE!
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$14.39
Tetra PondFood Premium Diet Koi & Goldfish Food, 1.25 lb
8 Blue Ridge Koi Fish Food 4.5lb - Koi Food 3/16” Platinum Pro Formula Goldfish Food, Premium Fish Food for Ponds, Ponds Fish Food, Floating Pond Pellet

Blue Ridge Koi Fish Food 4.5lb - Koi Food 3/16” Platinum Pro Formula Goldfish Food, Premium Fish Food for Ponds, Ponds Fish Food, Floating Pond Pellet

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$38.10
Blue Ridge Koi Fish Food 4.5lb - Koi Food 3/16” Platinum Pro Formula Goldfish Food, Premium Fish Food for Ponds, Ponds Fish Food, Floating Pond Pellet
9 TetraPond Pond Sticks Pond Fish Food for Goldfish and Koi, Healthy Nutrition Clear Water Pond Food

TetraPond Pond Sticks Pond Fish Food for Goldfish and Koi, Healthy Nutrition Clear Water Pond Food

  • IDEAL DIET FOR KOI AND GOLDFISH-BOOSTS ENERGY AND HEALTH!
  • SOFT, FLOATING STICKS ENSURE EASY EATING AND DIGESTION.
  • LESS WASTE PROMOTES CLEARER WATER FOR A HEALTHY POND.
BUY & SAVE
$19.99
TetraPond Pond Sticks Pond Fish Food for Goldfish and Koi, Healthy Nutrition Clear Water Pond Food
10 Blue Ridge Koi Fish Food 5lb - Koi Food Mini Growth Formula, Goldfish Food, Premium Fish Food for Ponds, Ponds Fish Food, Floating Pond Pellets

Blue Ridge Koi Fish Food 5lb - Koi Food Mini Growth Formula, Goldfish Food, Premium Fish Food for Ponds, Ponds Fish Food, Floating Pond Pellets

  • BOOST GROWTH & VITALITY WITH TOP-QUALITY PROTEIN AND NUTRIENTS!

  • IDEAL FOR KOI & GOLDFISH 5 INCHES AND SMALLER-BALANCED NUTRITION!

  • YEAR-ROUND FORMULA SUPPORTS HEALTH IN ALL SEASONS & COLDER TEMPS!

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$29.50
Blue Ridge Koi Fish Food 5lb - Koi Food Mini Growth Formula, Goldfish Food, Premium Fish Food for Ponds, Ponds Fish Food, Floating Pond Pellets
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ONE MORE?

I know of people who feed their pond fish catfish food and even dog food. They smile and tell me how cheap these foods are and that their fish do just fine with them. This may be true - for a while. Eventually, however, the "cheap" ingredients in these foods will cause the fish to become obese and die.

These types of foods are not formulated for ornamental fish. They contain grains and other plant proteins, not the main diet of any fish in the wild. Have you ever seen a fish eat corn on the cob? It is true that catfish food will "fatten ‘em up" quickly. That’s what it is designed to do - fatten the fish up for the kill - as quickly as possible so that they can be caught, cleaned and cooked. I doubt if you would want to do this with your koi and goldfish?

Ingredients to Forego

I am assuming you want to keep your koi and goldfish healthy and living for as many years as possible, as opposed to eating them. For that you need food especially developed for the long-term health and growth of the fish. There are many foods on the market that are designed for pond fish. Some are better than others. Some contain the "cheap" filler ingredients that add to the fatty growth that can play havoc on the fish’s liver later in life. Our best advice is to take the time to read the ingredients listed on the label of the food. Avoid the ones that have ground corn listed as any one of the first 4 ingredients. (There will be a higher content of the ingredient in the food if it is listed at the top) Many grains are a cheap source of protein and tend to be hard for ornamental fish to digest. Most of this protein goes through their system without being digested and out as waste, taxing your filtration system. This adds more ammonia to the water. If you are having problems with ammonia build-up in the water, check your food for a high content of grains.

Ingredients to Accept

A good food for your pond fish should list fish or other seafood meal as the first ingredient unless it is a wheatgerm food. If wheatgerm or wheat flour is listed first it should be followed by fish meal. Definitely avoid foods that list ground corn as one its first 4 ingredients. Corn Gluten, however, is acceptable as the 4th (or later) ingredient. Corn Gluten is the most easily digested part of corn.

The food should also contain Vitamin C, the best form of which is stabilized ascorbic acid (ascorbyl-2-phosphate). Vitamin C is very important when helping strengthen your fish’s immunity to bacterial infection. Other supplemental forms of high Vitamin C can be achieved by feeding sliced grapefruit, oranges, watermelon and dark lettuces (not iceberg).

Some foods have a color enhancer added (normally spirulina, same as "seaweed"). Spirulina aids in the brightening of some of the colors in your fish, especially the reds. Koi enthusiasts often feed their koi a high content of color enhancers just before the fish is judged in a koi competition to bring out the best coloration possible. Too much (or a continuous feeding) of the color enhancers can turn the whites of the fish pink. 2% spirulina added to the food is just about perfect for long-term feeding.

How Much is Too Much?

How much you feed your fish depends mainly on how well your bio-filtration can handle it. You can feed your fish several times a day (right, Gaye?) during warmer weather but only if you have enough filtration. Remember, the more you feed them, the more they grow, the more waste they give off, the harder your filtration must perform. For an average pond when water temperatures are between 65° and 70°, a rule of thumb is to feed twice a day and never more than they can eat in 5 minutes. After the water temperature reaches 70° you may feed more often as long as ammonia does not build up in the pond. Always remove any uneaten food.

Storing the Food

Care should be taken when you store your food. Large quantities can be kept fresh in the fridge (not the freezer). Never leave the food exposed to the sun. It will become rancid in only a few days.

Most of us who have fish in our ponds become attached to our finny friends. We name them and love them just as we do our cats and dogs. A koi that has been cared for well averages about 50 years of life. A goldfish about 15 years. They are part of our family. When we lose one we cry. I want my pets to have every chance to survive and to feed them inferior food would lower those chances.