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Zoo Med / Aquarium Fish

Zoo Med Spirulina 20 Flake Fish Food 4-Ounce

★ 4.6 · 1,127 ratings
$18.99

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Zoo Med Spirulina 20 Flake Fish Food 4-Ounce, $18.99, Availability unknown. Image 1 of 3.

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Zoo Med Spirulina 20 Flake Fish Food 4-Ounce
SKU
JC1888
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Source specifications

Brand
Zoo Med
Flavor
Fish
Age Range (Description)
All Life Stages
Item Form
Flake
Specific Uses For Product
Weight
Item Weight
0.45 Pounds
Department
Unisex-Adult
Manufacturer
Zoo Med Laboratories
ASIN
B003I5QRDS
Item model number
AFS4
Customer Reviews
4.6 4.6 out of 5 stars (1,127) 4.6 out of 5 stars
Date First Available
June 8, 2005
Item Package Dimensions L x W x H
6.65 x 3.66 x 3.5 inches
Item Dimensions LxWxH
4 x 4 x 5 inches
Brand Name
Zoo Med
Target Audience Keyword
fish
Directions
Avoid over feeding, feed only what fish can consume in 5 minutes or less
Warranty Description
Warranty
Model Name
Zoo Med Spirulina 20 Flake Fish Food, 4-Ounce
Color
Orange
Size
4 Ounce (Pack of 1)
Material
Plastic
Age Range Description
All Life Stages
Number of Items
1
Breed Recommendation
All Breed Sizes
Included Components
Zoo Med Spirulina 20 Flake Fish Food, 4-Ounce
Specific Uses for Product
Weight
Is Discontinued By Manufacturer
‎ No
Product Dimensions
‎ 4 x 4 x 5 inches; 7.2 ounces
Best Sellers Rank
#29,712 in Pet Supplies ( See Top 100 in Pet Supplies ) #270 in Aquarium Fish Food

The details

About this item

Zoo Med's Spirulina 20 fish food flakes are perfect for African Cichlids, Swordtails, Platies, Guppies, Mollies, Saltwater Angels and Tangs. For daily feeding of fresh or saltwater fish. Natural color enhancer. Spirulina is a blue-green plant plankton rich in raw protein and seven major vitamins: A1, B1, B2, B6, B12, C and E. It naturally contains beta carotene, color-enhancing pigments, and a whole range of minerals. In addition, it contains all essential fatty acids and the eight amino acids required for complete nutrition. Zoo Med's Spirulina 20 Flakes contain a full 20% Spirulina and provide a complete high protein diet for freshwater fish, marine fish, goldfish, crustaceans and invertebrates. Research has shown that fresh and saltwater fish exhibit superior growth, maturity, energetic behavior, and more elegant coloring when fed Spirulina. It is also well documented that Spirulina improves egg production Spirulina is rich in raw protein; For fresh or saltwater fish; Enhances breeding Rated 4.6 out of 5. Customers find this fish food excellent, particularly noting that cichlids love it and it brings out their colors well.

  • Spirulina is rich in raw protein
  • For fresh or saltwater fish
  • Enhances breeding

Product information

Materials and care

Material
Plastic

From the manufacturer

Product details and media

Zoo Med's Spirulina 20 fish food flakes are perfect for African Cichlids, Swordtails, Platies, Guppies, Mollies, Saltwater Angels and Tangs. For daily feeding of fresh or saltwater fish. Natural color enhancer. Spirulina is a blue-green plant plankton rich in raw protein and seven major vitamins: A1, B1, B2, B6, B12, C and E. It naturally contains beta carotene, color-enhancing pigments, and a whole range of minerals. In addition, it contains all essential fatty acids and the eight amino acids required for complete nutrition. Zoo Med's Spirulina 20 Flakes contain a full 20% Spirulina and provide a complete high protein diet for freshwater fish, marine fish, goldfish, crustaceans and invertebrates. Research has shown that fresh and saltwater fish exhibit superior growth, maturity, energetic behavior, and more elegant coloring when fed Spirulina. It is also well documented that Spirulina improves egg production and hatching rates, stimulates the reproductive processes, increases survival rates of younger fish, and arouses the appetite of fish. You'll see an amazing difference when you feed Spirulina 20. Made in the U.S.A.

Highlights: Spirulina is rich in raw protein For fresh or saltwater fish Enhances breeding

Key details: Item Weight: 0.45 Pounds | Department: Unisex-Adult | Customer Reviews: 4.6 4.6 out of 5 stars (1,127) 4.6 out of 5 stars | Item Package Dimensions L x W x H: 6.65 x 3.66 x 3.5 inches | Item Dimensions LxWxH: 4 x 4 x 5 inches | Brand Name: Zoo Med | Target Audience Keyword: fish | Directions: Avoid over feeding, feed only what fish can consume in 5 minutes or less | Warranty Description: Warranty | Model Name: Zoo Med Spirulina 20 Flake Fish Food, 4-Ounce

How it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.

Customer feedback: 4.6/5 average rating.

Customers say: Customers find this fish food excellent, particularly noting that cichlids love it and it brings out their colors well.

Review snippets: My fish love this food. Because it is spirulina and not the orange food, the water does not look brown between weekly water refreshment. The fish are in good health, are not fighting with each other due to hunger and / Great product. Read more

From the manufacturer ABOUT US: Here at Zoo Med, animals are our passion, and for 45 years we have made it our mission to supply in exotic pet foods, reptile products, and reptile habitats. As a company made up of reptile hobbyists, we strive to provide the supplies and knowledge needed to successfully care for reptiles, amphibians, fish, insects and other exotic pets to keep them happy. Many of us have desk pets, and many of those desks are wedged into places inbetween the 200+ terrariums, aquariums, paludariums, and other habitats at our facility. Inside our Animal Room we house over 90 species ranging from chameleons, geckos, skinks, frogs, fish, newts, tarantulas, and beetles. Outside in our Turtle Nirvana Greenhouse, we care for 30 species of turtles and tortoises, several of which are endangered. Whether you are an experienced reptile snake breeder or gecko breeder working with hundreds of animals or you’re looking into picking up your first pet bearded dragon, Zoo Med is sure to have what you need. See More

Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 1Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 2Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 3Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 4Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 5Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 6Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 7Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 8Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 9Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 10Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 11Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 12Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 13Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 14Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 15Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 16Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 17Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 18Zoo Med Spirulina 20 Flake Fish Food 4-Ounce — product detail 19

Customer feedback

Customer ratings

4.6 out of 5

1,127 ratings

Customers find this fish food excellent, particularly noting that cichlids love it and it brings out their colors well.

Customer

5.0 out of 5 stars Great for fish and great for budget!

Rating: 5

March 10, 2025

Verified purchase

My fish love this food. Because it is spirulina and not the orange food, the water does not look brown between weekly water refreshment. The fish are in good health, are not fighting with each other due to hunger and it is easily digestible by them. The size of the container works great to feed my fish in our 90 gallon tank. Read more

Curt m.

5.0 out of 5 stars Great product.

Rating: 5

February 25, 2026

Verified purchase

Great product. Read more

Chip

5.0 out of 5 stars Happy with this fish food.

Rating: 5

January 15, 2026

Verified purchase

All my fish love this flake fish food. It goes a long way. Read more

M. Miller

5.0 out of 5 stars Very pleased, initially.

Rating: 5

November 5, 2025

Verified purchase

This is an initial review. Tons of big, crispy flakes. I really like the look/ feel. Smell isn't unpleasant. I have four tanks with hundreds of community fish. Their diet varies. Mostly Community Crave flakes, some New Spectrum pellets/ wafers, Bug Bites; I was using Cobalt Ultra Spirolina, but I can't find it anymore, hence this purchase. Great price. Decent ingredients; 20% spirolina, and it's the second ingredient under protien; a few fillers, but lower down. Experation date is over two years, so that's good. Just fed them, and everyone was excited to eat! The true test will be the next vacuum; how well it was absorbed, and consumed. Read more

Customer review image

Bacteriopheophytin

4.0 out of 5 stars Good Choice for Fancy Goldfish

Rating: 4

January 31, 2016

Verified purchase

I wish there were half stars because I would give this 4 and a half. I bought this because the ingredients seemed simple, transparent and fit my goldfish's needs without including a lot of stuff that I did not think was good for him/her. This is the first time I have tried the food and I have been using it for roughly 4 months or so. I am comparing it to brands that you can usually find in pet stores in the United States. Pros: The product is pretty much as advertised: large, very fine flakes that smell like a combination of salmon and spirulina, the two main ingredients. Salmon is actually the main ingredient with spirulina right behind. There is less filler (soy, supposedly better for fish tummies than wheat), no artificial colors, no nasty preservatives (ethoxyquin) like you find in other fish food. The nutrient statistics on the bottle seem to fit what a goldfish should be eating: not really high in either protein or fat, a little lowish on fiber though, so this has to be supplemented somehow with other food. My fancy goldfish loves them: he "vacuums" them up as soon as they hit the water. Cons: The flakes do seem to attract algae into the tank. I find myself having to scrub the walls of the tank twice a week whereas before I started feeding this food, I did not have this issue. It does not seem to contain whole salmon meal, which includes the flesh and innards. Salmon meal to me means the skin and bones basically, but perhaps I am wrong about that. If I am right, whole salmon meal would be far more nutritious. Knowing how to feed a fancy goldfish these flakes without giving it swim bladder problems. Neutral: I did not seen any changes in color in my fish as advertised. He is not brighter, duller, nor has he changed colors like some do while eating food that contains molecules like beta-carotene. With respect to the last point in the "cons" section, fancy goldfish are prone to swim bladder issues. Some reviewers have complained that the flakes get smashed up but this is actually a good thing in the case of these kinds of goldfish. I break these flakes up into a small cup of tank water first, making sure that the flakes sink before feeding them to the "little nipper". This keeps the fish from coming up to the surface of the water and gulping in air while eating the flakes. Would granules be better? Hard to say actually, because they have to be soaked until they expand fully before feeding them, otherwise they do their bloating inside the fish. I usually give these once a day to fishy. As part of a varied diet including home-made veggie gel food, freeze-dried foods like bloodworms, and seaweed, I think this flake food is great for fancy goldfish! I recommend and will be buying again. Read more

Peter Suslock

5.0 out of 5 stars Superb Food of Superior Quality

Rating: 5

November 30, 2012

Verified purchase

Having kept fish for over 35 years there are few foods I haven't tried. Along time fan of Zoo Med for a multitude of reasons. Zoo Med uses top grade ingredients and the foods are made here in the United States. Unlike so many imports from China Zoo Med foods are free of filler, sub par ingredients and what is most important free of Ethoxyquin. Ethoxyquin is a toxic pesticide often touted as a preservative - It's long been banned from dog and cat foods however due to poor regulation lower end foods continue to use it. Studies have proven that Ethoxyquin even in trace amounts is especially lethal to fish. Studies that support this can be confirmed by simply looking ethoxyquin up on Wikipedia and follow the links to the findings. Regarding Spirulina 20 - this is an outstanding, naturally color enhancing food. Packed with protein at 45% this food is perfect for fish ranging from African Cichlids to Fancy Ornamental Goldfish - both of which I keep in a never ending accumulation of fish tanks. Spirulina is a plant based plankton often referred to as "the perfect food" it's packed with protein, vitamins A1, B1,B2,B6,B12 and vitamins C and E. In addition Spirulina is rich in eight essential fatty amino acids - it's a wonderfully healthy food. The flakes are huge which makes feeding a breeze - I have a huge Red Devil Cichlid who goes crazy when he sees the jar. My Ornamental goldfish and other Cichlids are equally crazy for it. Perfect for salt, fresh and brackish water fish - Spirulina 20 is an absolutely wonderful food which will enhance both the color and health of most any fish you keep. Read more

Felicia

5.0 out of 5 stars Great value

Rating: 5

February 13, 2026

Verified purchase

First off…the container is huge! Second…my plecos and two diff tanks actually moved for this lol IYKYK. Otherwise, I got this so my Mbuna don’t get malowi bloat. I gave to all 4 tanks- betta, Tetra and otto, Ralph catfish and Mbuna, and convict cichlids and fry. They all ate it right up no problem. Read more

Customer review image

R. Dice

5.0 out of 5 stars This is a great product!

Rating: 5

September 14, 2025

Verified purchase

Excellent quality food that my fish just love. I purchased the 2 oz. container and can't believe how big it is. Way more food than the average fish food cylinder. I've fed Spirulina for decades. In my experience it really does make the colors pop. Read more

Complete product information
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  "reviews": {
    "average_rating": 4.6,
    "customers_say": "Customers find this fish food excellent, particularly noting that cichlids love it and it brings out their colors well.",
    "items": [
      {
        "title": "5.0 out of 5 stars Great for fish and great for budget!",
        "body": "My fish love this food. Because it is spirulina and not the orange food, the water does not look brown between weekly water refreshment. The fish are in good health, are not fighting with each other due to hunger and it is easily digestible by them. The size of the container works great to feed my fish in our 90 gallon tank. Read more",
        "author": "Customer",
        "rating": 5,
        "date": "March 10, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great product.",
        "body": "Great product. Read more",
        "author": "Curt m.",
        "rating": 5,
        "date": "February 25, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Happy with this fish food.",
        "body": "All my fish love this flake fish food. It goes a long way. Read more",
        "author": "Chip",
        "rating": 5,
        "date": "January 15, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Very pleased, initially.",
        "body": "This is an initial review. Tons of big, crispy flakes. I really like the look/ feel. Smell isn't unpleasant. I have four tanks with hundreds of community fish. Their diet varies. Mostly Community Crave flakes, some New Spectrum pellets/ wafers, Bug Bites; I was using Cobalt Ultra Spirolina, but I can't find it anymore, hence this purchase. Great price. Decent ingredients; 20% spirolina, and it's the second ingredient under protien; a few fillers, but lower down. Experation date is over two years, so that's good. Just fed them, and everyone was excited to eat! The true test will be the next vacuum; how well it was absorbed, and consumed. Read more",
        "author": "M. Miller",
        "rating": 5,
        "date": "November 5, 2025",
        "verified": true,
        "images": [
          "https://m.media-amazon.com/images/I/71adMgiSK0L._SY88._SL1500_.jpg"
        ]
      },
      {
        "title": "4.0 out of 5 stars Good Choice for Fancy Goldfish",
        "body": "I wish there were half stars because I would give this 4 and a half. I bought this because the ingredients seemed simple, transparent and fit my goldfish's needs without including a lot of stuff that I did not think was good for him/her. This is the first time I have tried the food and I have been using it for roughly 4 months or so. I am comparing it to brands that you can usually find in pet stores in the United States. Pros: The product is pretty much as advertised: large, very fine flakes that smell like a combination of salmon and spirulina, the two main ingredients. Salmon is actually the main ingredient with spirulina right behind. There is less filler (soy, supposedly better for fish tummies than wheat), no artificial colors, no nasty preservatives (ethoxyquin) like you find in other fish food. The nutrient statistics on the bottle seem to fit what a goldfish should be eating: not really high in either protein or fat, a little lowish on fiber though, so this has to be supplemented somehow with other food. My fancy goldfish loves them: he \"vacuums\" them up as soon as they hit the water. Cons: The flakes do seem to attract algae into the tank. I find myself having to scrub the walls of the tank twice a week whereas before I started feeding this food, I did not have this issue. It does not seem to contain whole salmon meal, which includes the flesh and innards. Salmon meal to me means the skin and bones basically, but perhaps I am wrong about that. If I am right, whole salmon meal would be far more nutritious. Knowing how to feed a fancy goldfish these flakes without giving it swim bladder problems. Neutral: I did not seen any changes in color in my fish as advertised. He is not brighter, duller, nor has he changed colors like some do while eating food that contains molecules like beta-carotene. With respect to the last point in the \"cons\" section, fancy goldfish are prone to swim bladder issues. Some reviewers have complained that the flakes get smashed up but this is actually a good thing in the case of these kinds of goldfish. I break these flakes up into a small cup of tank water first, making sure that the flakes sink before feeding them to the \"little nipper\". This keeps the fish from coming up to the surface of the water and gulping in air while eating the flakes. Would granules be better? Hard to say actually, because they have to be soaked until they expand fully before feeding them, otherwise they do their bloating inside the fish. I usually give these once a day to fishy. As part of a varied diet including home-made veggie gel food, freeze-dried foods like bloodworms, and seaweed, I think this flake food is great for fancy goldfish! I recommend and will be buying again. Read more",
        "author": "Bacteriopheophytin",
        "rating": 4,
        "date": "January 31, 2016",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Superb Food of Superior Quality",
        "body": "Having kept fish for over 35 years there are few foods I haven't tried. Along time fan of Zoo Med for a multitude of reasons. Zoo Med uses top grade ingredients and the foods are made here in the United States. Unlike so many imports from China Zoo Med foods are free of filler, sub par ingredients and what is most important free of Ethoxyquin. Ethoxyquin is a toxic pesticide often touted as a preservative - It's long been banned from dog and cat foods however due to poor regulation lower end foods continue to use it. Studies have proven that Ethoxyquin even in trace amounts is especially lethal to fish. Studies that support this can be confirmed by simply looking ethoxyquin up on Wikipedia and follow the links to the findings. Regarding Spirulina 20 - this is an outstanding, naturally color enhancing food. Packed with protein at 45% this food is perfect for fish ranging from African Cichlids to Fancy Ornamental Goldfish - both of which I keep in a never ending accumulation of fish tanks. Spirulina is a plant based plankton often referred to as \"the perfect food\" it's packed with protein, vitamins A1, B1,B2,B6,B12 and vitamins C and E. In addition Spirulina is rich in eight essential fatty amino acids - it's a wonderfully healthy food. The flakes are huge which makes feeding a breeze - I have a huge Red Devil Cichlid who goes crazy when he sees the jar. My Ornamental goldfish and other Cichlids are equally crazy for it. Perfect for salt, fresh and brackish water fish - Spirulina 20 is an absolutely wonderful food which will enhance both the color and health of most any fish you keep. Read more",
        "author": "Peter Suslock",
        "rating": 5,
        "date": "November 30, 2012",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great value",
        "body": "First off…the container is huge! Second…my plecos and two diff tanks actually moved for this lol IYKYK. Otherwise, I got this so my Mbuna don’t get malowi bloat. I gave to all 4 tanks- betta, Tetra and otto, Ralph catfish and Mbuna, and convict cichlids and fry. They all ate it right up no problem. Read more",
        "author": "Felicia",
        "rating": 5,
        "date": "February 13, 2026",
        "verified": true,
        "images": [
          "https://m.media-amazon.com/images/I/61591xE9f-L._SY88._SL1500_.jpg"
        ]
      },
      {
        "title": "5.0 out of 5 stars This is a great product!",
        "body": "Excellent quality food that my fish just love. I purchased the 2 oz. container and can't believe how big it is. Way more food than the average fish food cylinder. I've fed Spirulina for decades. In my experience it really does make the colors pop. Read more",
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