Fishers Koi Diet+

Fisher’s Koi Diet+is an all-new, improved daily food for both koi and goldfish kept in ponds, tanks, and aquariums. It carries on the Fisher’s tradition of sustainable, US-sourced high-quality ingredients with all-natural preservatives, loads of spirulina, and natural color enhancers that bring out brilliant reds, oranges, and whites. Pair it with healthy fish from our nutrition and fish food collection.

Complete nutrition, brilliant color.Packed withomega-3 fatty acids and a high level of vitamin Cto support the immune system, plus improved probiotic content and beta-glucan to keep your fish healthy and resilient season after season.

Why Fisher’s Koi Diet+

Fisher’s builds this formula for the long-term health and color of prized koi and goldfish. Spirulina and natural color enhancers deepen pigmentation, while omega-3s, vitamin C, probiotics, and beta-glucan work together to support digestion and immune strength. The smaller pellet sizes float and soften quickly, encouraging the natural foraging behavior that keeps koi active and engaged at feeding time.

Features

Koi & goldfish formulaComplete daily nutrition for fish in ponds, tanks, and aquariums.Spirulina color boostLoads of spirulina and natural enhancers for vivid reds, oranges, and whites.Omega-3 & vitamin CSupports immune health, growth, and overall vitality.Probiotics & beta-glucanImproved probiotic content aids digestion and disease resistance.US-sourced ingredientsSustainable, high-quality ingredients with all-natural preservatives.Nitrogen-flushed freshnessFoil-lined, food-grade pouch flushed with 99.9% nitrogen to protect the vitamins.

Choose Your Pellet Size

Spec	3mm Pellet	5mm Pellet
Pellet Size	3 mm	5 mm
Best For	Smaller koi & goldfish	Larger koi & show fish
Foraging	Encourages natural grazing	Satisfying bites for big mouths
Bag Size	2 lb pouch	2 lb pouch
SKU	02636	02637

3mmis the right choice for smaller koi, goldfish, and mixed ponds where the smaller pellet is easy to eat and promotes natural foraging.5mmsuits larger koi and show fish that prefer a bigger bite. Both pellets share the exact same complete formula, so you can match the size to your fish without changing their diet.

Feeding Guide

Feed two to three times per day, offering only what your fish finish in a few minutes. In ponds, feed when water temperatures are consistently above 50°F; as temperatures drop below 50°F a koi’s metabolism slows, so reduce and then stop feeding for the season. Remove any uneaten food to keep water clean, and support pond clarity with FritzPond Clarifier.

Pair With

Feeding new pond stock? Add a few to your collection: Premium Koi 3-4″, Mixed Fancy Goldfish, and Shubunkin Goldfish.

FAQ

Can I feed this to goldfish?
Yes. Koi Diet+ is formulated for both koi and goldfish, including fancy varieties.

Will it help my fish color up?
The spirulina and natural color enhancers are designed to intensify reds, oranges, and whites over time with consistent feeding.

How should I store it?
Keep the pouch sealed in a cool, dry place. The nitrogen-flushed, foil-lined pouch keeps the vitamins fresh until you open it.

Is it made in the USA?
Yes. Fisher’s uses sustainable, US-sourced ingredients.