7 Compatible Goldfish Tank Mates That Don’t Eat Each Other!

Are you a proud owner of goldfish and looking to add some companions to their tank? Choosing the right compatible goldfish tank mates that don’t eat each other is essential to create a harmonious and thriving aquarium environment. 

While goldfish are known for their beauty and unique characteristics, they also prefer the company of other fish.

This article will explore the seven best goldfish tank mates that won’t eat each other, providing you with a diverse and captivating aquatic community.

goldfish breeding season

Now, let’s delve into the world of goldfish tank mates and explore the best companions for your beloved aquatic pets.


Goldfish are popular freshwater fish for their vibrant colors, unique body shapes, and engaging behaviors.

While they can thrive in a solo setup, introducing compatible tank mates can enhance their well-being and create a visually appealing aquarium. However, selecting tank mates that coexist peacefully with goldfish is crucial without becoming a part of their menu.

Does Your Goldfish Need A Tank Mate?

Goldfish are social fish that can thrive with tank mates, but choosing the right ones is essential. Goldfish need a tank large enough to accommodate more than one fish, with at least 20 gallons of water per fish.

Adding a tank mate can keep goldfish active and engaged, but keeping your tank clean is essential to avoid overcrowding and disease.

Will a betta fish kill a goldfish

For a successful community tank, choose fish species with similar care requirements and avoid adding aggressive or fin-nipping fish. 

It’s important to note that while goldfish are social fish, they do not necessarily need a tank mate to thrive, so it ultimately depends on the owner’s preference if you do decide to add a tank mate, research and choose wisely to ensure the health and happiness of your goldfish.

What Kind of Fish Can You Keep With Goldfish?

Before diving into the specific tank mates, let’s better understand what makes a good goldfish companion. Goldfish are social fish that prefer the company of other species. They are generally peaceful but can exhibit occasional territorial behavior. To ensure a successful tank mate pairing, consider the following factors:

  1. Tank Size: Goldfish require ample space to swim and grow. A larger tank provides more room for tank mates and reduces the likelihood of aggression.
  2. Temperament: Goldfish are peaceful and are best paired with calm and non-aggressive species. Avoid aggressive or fin-nipping fish that may harm your goldfish.
  3. Water Conditions: Goldfish are coldwater fish that thrive in similar temperatures. Ensure your tank mates tolerate the same water parameters to prevent stress or health issues.
  4. Feeding Habits: Goldfish are omnivorous and may consume plant matter and small invertebrates. Choose tank mates that have similar dietary requirements to avoid competition for food.

7 Compatible Goldfish Tank Mates That Don’t Eat Each Other

  1. Catfish: Catfish, such as bristlenose plecos and Corydoras, make excellent companions for goldfish. They are bottom-dwellers and help clean the tank by eating leftover food and algae. Choose catfish species that are compatible with goldfish in size and temperament.
  2. Tropical Fish: Certain species of tropical fish, like Swordtails and Guppies, can coexist peacefully with goldfish. These colorful and active fish add visual interest to the tank. Ensure the tropical fish’s water temperature and compatibility requirements align with those of goldfish.
  3. Schooling Fish: Adding schooling fish, such as zebra danios, Giant Danios or Tetras, can create a lively and dynamic environment in the aquarium. These small fish thrive in groups and can be a great addition to a goldfish tank. Make sure the schooling fish are not too small to be mistaken as food by the goldfish.,
  4. Hoplo Catfish: Hoplo Catfish are known for their peaceful nature and compatibility with goldfish. They have a similar temperament and are skilled bottom-dwellers, contributing to the overall cleanliness of the tank.
  5. Japanese Rice Fish: Japanese Rice Fish, also known as Medaka, are a charming and colorful species that can cohabitate with goldfish. They are small, peaceful, and adapt well to various water conditions.
  6. Corydoras Catfish: Corydoras Catfish, with their distinctive armored bodies and playful behavior, is an ideal match for goldfish. They are bottom-dwellers and contribute to the tank’s cleanliness by scavenging for food debris.
  7. White Cloud Mountain Minnows: White Cloud Mountain Minnows are small, peaceful fish that thrive in cooler water temperatures, making them compatible with goldfish. They are active swimmers and add movement and liveliness to the tank.

Factors to Consider When Choosing Tank Mates

When selecting tank mates for your goldfish, it’s essential to consider several factors:

  1. Tank Size: Ensure your tank is large enough to comfortably accommodate the goldfish and their tank mates. A general guideline is to provide a gallon of water per inch of adult fish.
  2. Temperament: Consider the character of the goldfish and the potential tank mates. Avoid aggressive or fin-nipping species that may cause stress or harm to the goldfish.
  3. Water Conditions: Maintain water parameters suitable for goldfish and their tank mates. This includes temperature, pH levels, and water hardness. Research the specific requirements of each species to ensure compatibility.
  4. Feeding Habits: Choose tank mates that have similar dietary preferences to goldfish. This helps prevent competition for food and ensures all fish receive proper nutrition.

Considering these factors, you can create a harmonious and thriving community within your goldfish tank.

Maintaining a Healthy Tank Environment

It’s essential to maintain a healthy tank environment. Here are some tips to follow to promote the well-being of your goldfish and their tank mates,

  1. Regular Tank Cleaning: Perform frequent water changes and clean the tank to remove excess waste and maintain water quality. This helps stop the buildup of harmful substances and keeps the tank clean and habitable for all fish.
  2. Monitoring Water Parameters: Regularly test the water parameters, including temperature, pH, ammonia, nitrite, and nitrate levels. Keep these within the appropriate range for the specific species in your tank.
  3. Providing Adequate Space and Hiding Spots: Ensure the tank has enough space for each fish to swim freely. Additionally, provide hiding spots and shelters, such as rocks, plants, or caves, where the tank mates can retreat and feel secure. This helps reduce stress and promotes a sense of safety in the tank.
  4. Maintaining a Balanced Diet: Feed your goldfish and their tank mates a balanced and nutritious diet. Provide a combination of high-quality fish pellets, flakes, and occasional treats such as freeze-dried or live foods. Consider the specific dietary needs of each species and adjust the feeding accordingly.
  5. Observing Behavior and Compatibility: Regularly keep the behavior of all fish in the tank. Look for signs of aggression, stress, or compatibility issues. If any conflicts arise, be prepared to separate or rehome incompatible tank mates to ensure the well-being of all fish.

By implementing these simple practices, you can create a thriving and harmonious environment for your goldfish and their compatible tank mates.

FAQs (Commonly Asked Questions)

Can goldfish live with other fish?

Yes, goldfish can live with other fish, but it’s vital to choose compatible species with similar requirements regarding tank size, water conditions, and temperament.

How many tank mates can I add to my goldfish tank?

The number of tank mates you can add depends on the size of your tank and the specific needs of your goldfish and the chosen companions. It’s recommended to provide ample space for each fish and avoid overcrowding.

Can goldfish be kept with tropical fish?

Yes, certain tropical fish can coexist peacefully with goldfish. However, ensure that the tropical fish’s water temperature and compatibility requirements align with those of goldfish.

Do goldfish need a larger tank to accommodate tank mates?

Yes, goldfish require a larger tank to accommodate tank mates. They are active swimmers and produce more waste than other fish, necessitating a spacious environment to maintain water quality.

What are some signs of compatibility between goldfish and other fish?

Compatibility signs include peaceful coexistence, lack of aggression or fin-nipping, and similar swimming patterns. It’s essential to monitor the behavior of all fish and intervene if any conflicts arise.

What are the best tank mates for goldfish?

The best goldfish tank mates are species that prefer to live in similar temperature ranges as goldfish, won’t bother your goldfish, and won’t be eaten by your goldfish.

Can any fish live with goldfish?

No, not all fish can live with goldfish. Some fish are too small and will be eaten by goldfish, while others may bother your goldfish. It’s vital to choose tank mates that are compatible with goldfish.

What kind of catfish make good goldfish tank mates?

Hoplo catfish are often considered excellent tank mates for goldfish since they prefer to live in similar water conditions and won’t bother your goldfish.

Is it possible to keep a community tank with goldfish?

Yes, it’s possible to keep a community tank with goldfish, but choosing compatible tank mates that won’t bother or be eaten by your goldfish is crucial.

What is the ideal goldfish tank environment?

Goldfish prefer to live in a tank of at least 20-30 gallons, with a group of at least 2-3 goldfish. Keeping your tank clean and maintaining a temperature range suitable for goldfish is essential.

What are some suitable goldfish tank mates?

Some suitable goldfish tank mates include larger fish that won’t be eaten by goldfish or bother your goldfish, such as hillstream loach, Gouramis, weather loaches, Rainbowfish, and Rosy Barbs.

Can fancy goldfish live with other goldfish breeds?

Yes, fancy goldfish can live with other goldfish breeds as long as they are compatible and won’t bother each other.

What are some common goldfish tank mates?

Some common goldfish tank mates include Plecos, Corydoras, dojo loach, and other species of catfish that won’t be eaten by goldfish.

Will goldfish eat tiny fish?

Yes, goldfish will eat tiny fish that are small enough to fit in their mouths. Choosing tank mates that are too big to be eaten by your goldfish is essential.

What kind of fish can live with goldfish in a community tank?

Some fish species that can live with goldfish in a community tank include larger fish such as Gouramis, Rainbowfish, mystery snails, Rosy Barbs, and platy fish.


Adding compatible goldfish tank mates that don’t eat each other to your goldfish aquarium can enhance the aquatic community’s beauty, diversity, and overall well-being. You can select suitable companions that will coexist peacefully with your goldfish by considering factors such as temperament, tank size, water conditions, and feeding habits. Remember to provide a healthy and clean tank environment, monitor water parameters, and observe the behavior of all fish to ensure a successful and enjoyable aquatic ecosystem. So, choose from the vast array of tank mates discussed in this article. Create a captivating underwater world where your goldfish thrive alongside their compatible companions.

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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