Best Spirulina Fish Food of 2026

Janie Foster Avatar
Janie Foster
Last Updated: Jan 8, 2026

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Spirulina fish food is a popular choice among fish enthusiasts who want to provide their pets with a well-balanced and nutritious diet. This type of fish food is made from spirulina, a blue-green algae that is rich in protein, vitamins, and minerals. Spirulina fish food is particularly beneficial for herbivorous fish species, as spirulina is a natural source of plant-based nutrients. It can help enhance fish coloration, boost immune system function, and promote healthy growth. Spirulina fish food is available in various forms, including flakes, pellets, and freeze-dried options, making it easy to incorporate into any feeding routine.

At a Glance: Our Top Picks

Zoo Med Spirulina 20 Flake Fish Food Cover #TOP 1
Zoo Med Spirulina 20 Flake Fish Food
ftb score rating icon 9.8
Xtreme Aquatic Foods 2227-E Spirulina Flake Cover #TOP 2
Xtreme Aquatic Foods 2227-E Spirulina Flake
ftb score rating icon 9.7
Zoo Med Spirulina 20 Flake Fish Food Cover #TOP 3
Zoo Med Spirulina 20 Flake Fish Food
ftb score rating icon 9.5

Top 10 Spirulina Fish Food

#TOP 1

Zoo Med Spirulina 20 Flake Fish Food

AFS4
Orange
4 Ounce (Pack of 1)
Zoo Med Spirulina 20 Flake Fish Food Cover
Zoo Med Spirulina 20 Flake Fish Food, 4-Ounce

This fish food is made with spirulina, a nutrient-rich algae that is high in raw protein. It is suitable for both fresh and saltwater fish and can enhance breeding.

What We Like
High in raw protein
Suitable for both fresh and saltwater fish
Enhances breeding
#TOP 2

Xtreme Aquatic Foods 2227-E Spirulina Flake

Xtreme Aquatic Foods 2227-E Spirulina Flake Cover
Xtreme Spirulina Flakes - Balanced Herbivorous Diet for Tropical and Marine Fish, Enhanced Health, Vibrant Colors - USA Farm Grown - Ideal for Cichlids, Barbs, Tetras and Guppies (3.5oz)

Xtreme Aquatic Foods 2227-E Spirulina Flake is an all-natural fish food made in the USA. It contains no hormones and is made with high-quality spirulina. Spirulina is a type of blue-green algae that provides numerous health benefits for fish. It is rich in vitamins, minerals, and antioxidants, which can help boost the immune system and enhance the overall health of your aquatic pets. The Xtreme Spirulina Flake is a convenient and nutritious option for feeding your fish. It is suitable for all types of fish and can be easily incorporated into their diet. With Xtreme Spirulina Flake, you can ensure that your fish receive the essential nutrients they need to thrive.

What We Like
All-natural
Made in USA
No hormones
#TOP 3

Zoo Med Spirulina 20 Flake Fish Food

4 Ounce (Pack of 3)
Zoo Med Spirulina 20 Flake Fish Food Cover
Zoo Med Spirulina 20 Flake Fish Food, 4-Ounce (3 Pack)

Zoo Med Spirulina Fish Food is a nutritious option for your aquatic pets. Packed with raw protein, this food helps promote healthy growth and vitality in both fresh and saltwater fish. If you're looking to enhance breeding, this food can play a significant role in improving breeding conditions. The convenience of a 4-ounce pack makes it easy to feed your fish regularly without worrying about spoilage. Plus, knowing that it’s made in the U.S.A. adds an extra layer of trust in the quality of the product.

What We Like
High protein content
Suitable for all fish types
Supports breeding
Convenient packaging
Made in the U.S.A.
#TOP 4

Zoo Med Spirulina 20 Flake Fish Food

AFS2
Black
2 Ounce (Pack of 1)
Zoo Med Spirulina 20 Flake Fish Food Cover
Zoo Med Spirulina 20 Flake Fish Food, 2-Ounce

Zoo Med Spirulina 20 Flake Fish Food is a high-quality fish food suitable for both fresh or saltwater fish. The food is rich in raw protein and contains Spirulina, which is beneficial for enhancing breeding.

What We Like
Contains raw protein
Suitable for both fresh or saltwater fish
Enhances breeding
#TOP 5

Zoo Med AZMAFS1 Aquatrol Spirulina 20 Flake

976501
White
1 Ounce (Pack of 1)
Zoo Med AZMAFS1 Aquatrol Spirulina 20 Flake Cover
Zoo Med Laboratories AZMAFS1 Aquatrol Spirulina 20 Flake, 1-Ounce

Zoo Med AZMAFS1 Aquatrol Spirulina 20 Flake is a fish food that can be used for everyday feeding in both fresh and saltwater. The flakes are specially formulated to provide essential nutrients for your fish.

What We Like
Can be used for everyday feeding
Suitable for both fresh and saltwater fish
Provides essential nutrients for fish
#TOP 6

Brine Shrimp Direct PhytoDisc Plus Spirulina Wafers

WAF8Z
8 Ounce (Pack of 1)
Brine Shrimp Direct PhytoDisc Plus Spirulina Wafers Cover
Brine Shrimp Direct PhytoDisc Plus Spirulina Algae Sinking Wafers, 8 oz

The Brine Shrimp PhytoDisc Wafers are specially designed for herbivorous and omnivorous bottom-feeding fish, providing the right nutrition for species like plecostomus and catfish. These sinking wafers make feeding easy by delivering food directly to the bottom where your fish naturally feed, reducing waste. Because they are water-stable, you can trust that the wafers won’t quickly dissolve, keeping the aquarium cleaner and ensuring your fish get their meal. Plus, their high digestibility means your fish can absorb nutrients efficiently, promoting better health and growth. This product offers a convenient and effective feeding option for your bottom feeders.

What We Like
For herbivorous and omnivorous fish
Sinking wafers for bottom feeders
Water-stable formula
Highly digestible ingredients
#TOP 7

Xtreme Aquatic Community Crave Fish Food

Xtreme Aquatic Community Crave Fish Food Cover
Xtreme Community Crave Flake - Krill & Spirulina Blend for Vibrant Colors, Immune Support and Digestive Health, Tropical & Freshwater Fish Nutrition – Premium Community Aquarium Food (3.5oz)

The Xtreme Aquatic Community Crave Fish Food is a nutritionally balanced professional formula that is perfect for all types of fish. With a precise ratio of 60% spirulina intense flake and 40% krill flake, this fish food is designed to attract even the most finicky of fish. Not only does it provide a balanced amino acid and protein profile, but it also helps to naturally enhance the color of your prized fish. The easy crumble design of the flake allows you to feed your top, mid, and bottom-feeding fish easily, and the clear-water formula ensures that your tank stays clean. Made in the USA, this fish food is of unparalleled quality and is sure to keep your fish happy and healthy.

What We Like
Nutritionally balanced
Naturally enhances fish color
Easy to feed all types of fish
#TOP 8

Xtreme Community Crave Krill & Spirulina Flake

2139-B
2 Ounce (Pack of 1)
Xtreme Community Crave Krill & Spirulina Flake Cover
Xtreme Community Crave Flake - Krill & Spirulina Blend for Vibrant Colors, Immune Support and Digestive Health, Tropical & Freshwater Fish Nutrition – Premium Community Aquarium Food (2oz)

Xtreme Crave Fish Food offers a special mix of 60% spirulina and 40% krill flakes, giving your fish a tasty and nutritious meal. This blend helps brighten your fish's natural colors, making your aquarium more vibrant and lively. The flakes dissolve quickly without clouding the water, so you won’t have to worry about murky tanks. Plus, the spirulina provides essential proteins, vitamins, and minerals that support your fish’s immune system and overall health. With this food, you can enjoy a clearer tank and healthier, more colorful fish every day.

What We Like
Balanced spirulina and krill blend
Enhances fish coloration
Clear water formula
Immune system support
Rich in proteins and vitamins
#TOP 9

Aquatic Foods Inc. Spirulina & Veggie Sinking Wafers

AF-12MSSWSAV-FBA-3.85
Aquatic Foods Inc. Spirulina & Veggie Sinking Wafers Cover
Aquatic Foods Inc. 12mm - 1/2" Small Sinking Wafers of Spirulina, Algae & Veggies for Plecos, Catfish, Shrimp, Snails, Crabs, Crayfish, 12-Type Pellet Mix & 4-Type Wafer Mix Included..4.9oz Canister

The Aquatic Foods Spirulina Wafers offer a nutritious sinking food option made from spirulina, algae, and vegetables, perfect for a variety of aquatic pets like plecos, catfish, shrimp, and snails. You can explore a wide selection of over 400 tropical fish foods by visiting their Amazon storefront, making it easy to find the right food for your fish. Each batch is carefully sifted to remove dust and small particles, ensuring you receive clean, high-quality pellets that maintain water clarity and keep your tank healthy. Keep in mind that colors and sizes may vary slightly, reflecting natural ingredients and production variations.

What We Like
Wide product selection
High-quality, sifted food
Natural spirulina and veggies
Suitable for many aquatic species
#TOP 10

Hikari Freeze Dried Spirulina Brine Shrimp Cubes

33551
White
Hikari Freeze Dried Spirulina Brine Shrimp Cubes Cover
Hikari Bio-Pure Freeze Dried Spirulina Brine Shrimp Cubes for Pets, 0.42-Ounce

Hikari Freeze Dried Spirulina Brine Shrimp Cubes are designed for your pets. Its Ratcheting Dispenser Top dispenses the food conveniently. The food is multi-vitamin rich, free of parasites and harmful bacteria, and reduces stress and stress-related diseases. Nitrogen charging reduces oxidation prior to opening. It will not cloud the water.

What We Like
Convenient Ratcheting Dispenser Top
Reduces stress and stress-related diseases
Free of parasites and harmful bacteria
Reduces oxidation prior to opening
Will not cloud the water
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Is spirulina good fish food?

Yes, spirulina is good fish food. It offers complete proteins, even though it comes from a plant. It can also boost fish immune systems and improve their ability to fight off diseases and bacteria.

2. What is the use of spirulina in fish feed?

Spirulina has several benefits as fish feed. It improves nutrient absorption, boosts the fish's immunity, increases disease resistance, and enhances fish coloration. Spirulina is a rich source of antioxidant pigments like phycocyanin and carotenoids, which can modulate the host immune system.

3. Can you feed spirulina to fish everyday?

Yes, you can feed fish spirulina every day. Using a daily spirulina-based food ensures that fish receive the right amount without the risk of overfeeding. Alternatively, you can supplement their regular food with spirulina flakes every few days to provide a boost of health.

4. How often should I feed my fish spirulina?

For betta fish, spirulina should be given 2 to 3 times a day in limited amounts. Betta fish primarily need nutrients from animal-based proteins, so spirulina should not be the sole source of food. Overfeeding spirulina can lead to uneaten food sitting in the tank and promoting bacterial growth.

5. Is spirulina as good as fish oil?

Spirulina cannot be used as a replacement for fish oil. Fish oil is derived from microalgae with different nutritional profiles, particularly rich in omega-3 fatty acids. Spirulina, on the other hand, offers other nutritional benefits but does not provide the same omega-3 fatty acids found in fish oil.

6. Can freshwater fish eat spirulina?

Yes, freshwater fish can eat spirulina. Spirulina 20 flakes, which contain 20% spirulina, provide a complete high-protein diet suitable for freshwater fish, saltwater fish, goldfish, crustaceans, and invertebrates.

7. Can you overfeed spirulina?

Yes, it is possible to overfeed spirulina. When using spray-dried spirulina, it is important to use it sparingly at first and adjust accordingly. Overfeeding can lead to issues, especially when feeding invertebrates or fry with dry feeds.

Editor's Notes

During our spirulina fish food research, we found 24 spirulina fish food products and shortlisted 10 quality products. We collected and analyzed 25,711 customer reviews through our big data system to write the spirulina fish food list. We found that most customers choose spirulina fish food with an average price of $13.00.

The spirulina fish food are available for purchase. We have researched hundreds of brands and picked the top brands of spirulina fish food, including Zoo Med, Xtreme Aquatic Foods, Brine Shrimp Direct, Aquatic Foods Inc., Hikari. The seller of top 1 product has received honest feedback from 1,678 consumers with an average rating of 4.9.

Written by
Janie Foster Avatar

Janie Foster is a writer & pet blogger from Los Angeles, she enjoys living with her two cats and three dogs. She owned her first dog 10 years ago and then started her personal blog to record her dog's daily life. Throughout her personal life, she has developed specialized knowledge in pet care, pet nutrition, feeding habits, and more.