Goldfish Tank Mates – 26 Ideal Tank Mates for Goldfish

choosing goldfish tank mates

Choosing tank mates for goldfish requires understanding their needs and behaviors. The right match is crucial to avoid issues in the tank.

Look for fish with similar temperature and diet preferences, and low aggression. Not all calm or same-sized fish are suitable.

Careful choice is key for a healthy and attractive aquarium.

Other Goldfish

Adding suitable tank mates for your goldfish is important for a social environment. Choose goldfish that are similar in size and have the same habitat requirements. This ensures a peaceful tank where all fish can thrive.

Fancy goldfish and comet goldfish are common choices. Match goldfish with similar sizes to avoid bullying. Fancy goldfish are slower and do well with similar types. Comet goldfish are faster and may outcompete slower goldfish, causing stress.

Research the needs and behaviors of potential tank mates before adding them. Watch their interactions to prevent issues. If problems occur, you may need to change the tank setup.

Choosing compatible goldfish tank mates is key for a balanced and healthy aquarium.


While considering the community dynamics of a goldfish aquarium, the platy emerges as an excellent choice for adding both color and companionship to your aquatic setup.

As a freshwater species, the platy fish, also known as livebearers, are well-suited for life alongside goldfish. They are small enough to fit comfortably in a community tank, yet typically too large as adults to be at risk of predation from their goldfish tank mates. However, it is important to note that goldfish may consume young platy fry, so breeding behavior should be monitored to control the population and ensure fry safety.

Platies are peaceful animals that contribute to a harmonious tank environment. With their array of vibrant color morphs, they add a splash of variety to the underwater landscape. Their gregarious nature makes them ideal companions for the often-social goldfish, and they can help keep the tank clean by feeding on algae and leftover food that goldfish may miss.

To stay healthy, platy fish require a minimum tank size of 10 gallons and can thrive in cooler waters that are also preferred by goldfish. This compatibility in temperature preferences ensures that both species can live comfortably without the need for specialized heating equipment. Moreover, platies are relatively easy to care for, which is beneficial for aquarists of all experience levels.

Black Skirt Tetra

The Black Skirt Tetra can be a suitable choice for a shared aquarium with goldfish. With its black stripes and extended fins, it can enhance the visual appeal of the tank. These tetras are generally peaceful and unlikely to disturb goldfish due to their non-aggressive nature.

They remain small, allowing them to live alongside goldfish without intense competition for space or food. Black Skirt Tetras can survive in the cooler waters that goldfish inhabit, which is beneficial for maintaining a shared tank environment.

It’s important to avoid tank mates that are aggressive or have drastically different needs from goldfish. Black Skirt Tetras are quick swimmers, which helps them steer clear of conflicts with goldfish.

Bloodfin Tetra

Bloodfin Tetras are suitable for goldfish tanks due to their peaceful nature and similar temperature preferences. These fish have red-tipped fins and grow to about two inches, making them neither threatening to goldfish nor vulnerable.

They do not compete aggressively for food, which is important in a shared tank. Both species prosper in stable water conditions with temperatures between 65 to 75 degrees Fahrenheit.

Longfin Bristlenose Pleco

The Longfin Bristlenose Pleco is a suitable tank mate for goldfish due to its peaceful nature and ability to control algae. This fish, known for its long fins and facial bristles, typically reaches a size of 3 to 5 inches, making it ideal for home aquariums. A tank of at least 25 gallons is necessary to provide enough space for these plecos, which are bottom dwellers and help keep the tank clean by eating algae.

However, even though they consume algae, it’s important to give the Longfin Bristlenose Pleco additional nutrition through sinking algae wafers. Since goldfish may outcompete them for food, it’s essential to monitor feeding times to ensure the plecos get their share. A varied diet is important for maintaining a healthy tank environment.

Rubber Lip Pleco

The Rubber Lip Pleco, or Chaetostoma milesi, is a friendly algae-eating fish suitable for goldfish tanks with cooler water. It thrives on the aquarium’s bottom, feeding on algae on various surfaces. It is compatible with goldfish because of similar environmental needs, especially temperature.

Typically growing to 6 inches, the Rubber Lip Pleco is too big to be considered food by goldfish and is efficient in controlling algae. It is not aggressive, promoting a calm tank environment.

A large tank is necessary for both species to live without stress, allowing space for the pleco to forage and the goldfish to swim. Providing hiding places like caves or driftwood is beneficial for the pleco’s sense of security.

Corydoras Catfish

Corydoras catfish, commonly known as cory catfish, are a good match for goldfish due to their calm nature and scavenging behavior that helps keep the tank clean. These small fish feed on leftover food, reducing tank maintenance.

With a short nose and brownish-black color, corydoras blend into various substrates. They mainly stay at the bottom, picking up food that goldfish miss, which is helpful since goldfish often leave uneaten food behind.

Cory catfish are social and prefer living in groups, which can add activity to the tank without causing conflict with goldfish as they are not aggressive.

To ensure corydoras’ well-being, include hiding spots like plants or caves in the tank. When first introduced to a goldfish tank, watch their interactions to maintain a peaceful environment and avoid stress for both fish types.

Brown Bullhead Catfish

Brown Bullhead Catfish can be a suitable addition to a goldfish aquarium due to their peaceful nature and ability to clean the substrate by eating leftover food and debris. They thrive in cooler water temperatures, similar to those preferred by goldfish, and originate from North American freshwater habitats.

As opportunistic feeders, Brown Bullhead Catfish contribute to a clean aquarium by consuming food that goldfish may overlook, reducing organic waste and improving water quality. They are hardy and can live comfortably with goldfish if the aquarium is large enough for their growth.

It is important to distinguish Brown Bullhead Catfish from other catfish species, like Hoplo catfish or rubber lip pleco, which have different care needs. Providing sufficient hiding places and space is vital for the health of Brown Bullhead Catfish and to ensure they can live with goldfish without stress.

Hoplo Catfish

Hoplo Catfish can be good tank mates for goldfish. They share similar water requirements and are peaceful fish, making them suitable for community tanks. Originally from South America, Hoplo Catfish need careful selection because size and care needs vary between species. It’s important to ensure compatibility with the goldfish tank.

Both fish types do well in similar temperature ranges, but maintaining consistent water conditions is essential for their health. Regular water changes and water quality checks are necessary for a healthy aquarium.

Giant Danio

Giant Danios are active and colorful fish suitable for aquariums with active goldfish. They are social, preferring to be in groups of five to seven to reduce stress and aggression.

Giant Danios are larger than Zebra Danios and can match the energy of comet goldfish. They display blue and yellow stripes and need a tank of at least 30 gallons for sufficient swimming space.

These fish are generally peaceful and fit well in community tanks if they have enough space and are kept with other Giant Danios. It’s important to avoid overfeeding to prevent obesity and maintain tank health.

Zebra Danio

If you’re considering enhancing your goldfish tank, the Zebra Danio is a suitable choice. These fish have blue and yellow stripes and get along with goldfish. Zebra Danios are active, which adds energy to an aquarium.

These fish prefer to be in groups of five or six, which helps them display natural behaviors and stay stress-free. It’s important to have enough space in your aquarium for both goldfish and Zebra Danios.

Zebra Danios can live in temperatures between 65 to 75 degrees Fahrenheit, similar to goldfish. They are also good at hiding when necessary.

When adding Zebra Danios to a goldfish tank, ensure they are big enough to not be eaten by the goldfish. This helps keep a safe environment for both fish types. With proper size selection, Zebra Danios are a lively choice for a goldfish tank.

Checker Barb

The Checker Barb is a peaceful medium-sized fish suitable for goldfish tanks. It promotes a calm environment and grows to 3-4 inches, fitting well with goldfish without posing a threat. Checker Barbs have a checkered pattern, offering a toned-down beauty that complements goldfish colors. They have barbels for bottom feeding and are not aggressive toward tank mates.

Checker Barbs adapt to various fresh water conditions, similar to goldfish needs. A minimum 20-gallon tank is recommended for their active swimming. As tank mates, Checker Barbs are a good choice due to their low maintenance and harmonious nature.

Gold Barb

Gold Barbs, or Chinese Barbs, add vibrant color to goldfish tanks and are suitable for cooler water. These small, peaceful freshwater fish are good for community tanks and should be kept in groups of five or more to ensure social stability and natural behavior. They are active swimmers, providing contrast to goldfish.

They are omnivorous and not picky about food, accepting flakes, freeze-dried, and live food, which is good for a shared tank environment. Gold Barbs are easy to care for, thrive in well-oxygenated water with proper filtration, and grow up to 3 inches, fitting well with goldfish without being at risk of predation.

Rosy Barb

Rosy Barbs are suitable for goldfish tanks due to their peaceful nature and ability to live in cooler water. Their bright red coloration adds visual interest to the tank. They prefer to swim in groups and do not disturb goldfish, promoting a calm environment.

These fish thrive in water temperatures from 65 to 75 degrees Fahrenheit, which matches the needs of many goldfish types, making them good tank mates. Grouping Rosy Barbs is advisable as they naturally school, which creates an active tank and helps maintain social stability, reducing stress.

Rosy Barbs can grow up to 6 inches and require at least a 20-gallon tank for sufficient space, which is also necessary for the well-being of goldfish. They are an easy-to-care-for species that can complement a goldfish aquarium, beneficial for beginners wanting to diversify their tank with minimal hassle. Their inclusion can improve the tank’s health and appearance.

Dojo Loach

Dojo Loaches resemble foot-long hot dogs and make good companions for goldfish in cold-water aquariums due to their calm nature and compatibility. They are active and playful, contributing movement to the tank without being aggressive towards goldfish.

These fish help maintain cleanliness by searching the substrate for food, using their long whiskers to navigate and forage. Their need for cooler water temperatures matches that of goldfish, simplifying tank management.

Dojo Loaches are adaptable to various water conditions, making them suitable for aquarium enthusiasts without access to complex equipment. Their ease of care and adaptability make them a cost-effective choice for adding variety to goldfish tanks.

Hillstream Loach

The Hillstream Loach is a natural algae-eater and a peaceful addition to cool-water aquariums, compatible with goldfish. It scavenges for food scraps and helps keep tanks clean by consuming algae. With its suitability for cold water, it is a good companion for goldfish.

This species can attach to the aquarium glass and surfaces, which is beneficial for algae control and adds interest for observers. It does not disrupt the water or damage goldfish’s protective slime coat.

Adding a Hillstream Loach to a goldfish tank helps manage algae, potentially reducing cleaning needs. Its calm and non-territorial nature allows for a peaceful coexistence with goldfish.

Japanese Rice Fish

Japanese Rice Fish, or Medaka, are suitable for goldfish aquariums. They are peaceful and can live in similar conditions as goldfish. They do well in the same temperature range and can help maintain a calm tank environment.

These fish are small, ranging from 3.3 to 6.7 inches, which prevents them from being seen as prey by goldfish. They are easy to care for and come in various colors, adding to the tank’s visual interest.

It’s important to select tank mates for goldfish that are non-aggressive and won’t harm their fins. Japanese Rice Fish are a good example of such companions and get along with most peaceful fish species.

For a healthy tank, there must be enough space for all fish to exhibit natural behaviors. The Japanese Rice Fish is a good choice for an aquarium with goldfish, contributing to a peaceful and attractive setting.

Murray River Rainbow Fish

The Murray River Rainbow Fish, originating from Australia’s Murray River, is a suitable companion for goldfish due to their peaceful nature and ability to live harmoniously in the same community. Their distinctive silver coloration enhances the visual appeal of an aquarium.

These fish maintain a calm environment, crucial for the well-being of the tank. They grow to a size similar to goldfish, preventing competition or intimidation between the species.

Murray River Rainbow Fish can thrive in the same water conditions as goldfish, making tank maintenance easier for the owner. They require similar water temperatures and quality, promoting a stable and healthy aquarium ecosystem.


Swordtails are suitable companions for goldfish, thriving in similar cool water conditions. They are peaceful and add color to an aquarium. Swordtails are easy to pair with goldfish due to their shared temperature preferences.

Their omnivorous diet is compatible with goldfish feeding habits, making tank care easier. Swordtails are named for their distinctive tails, which add visual interest to an aquarium. However, it’s important to have a large enough tank to accommodate both species comfortably.

Adequate space is essential to avoid stress and aggression and to allow swordtails and goldfish to coexist peacefully. Swordtails need space to swim freely without invading goldfish territory. A larger tank helps prevent conflicts and supports the well-being of both types of fish.

Regular monitoring of water quality is necessary to maintain the health of both goldfish and swordtails and to avoid stress and disease. In summary, swordtails can be a good addition to a goldfish aquarium if there is enough space and water conditions are well-maintained.

Scissortail Rasbora

Scissortail Rasboras are suitable companions for goldfish due to their peaceful disposition and ability to thrive in cooler water, which goldfish prefer, typically between 65-75 degrees Fahrenheit. As active swimmers, they contribute to the tank’s dynamics without disturbing the peace. Their silver body and distinctive forked tail provide visual interest, and they are non-aggressive, making them compatible with various goldfish personalities.

Grouped together, Scissortail Rasboras enhance the visual appeal of a goldfish tank. They require ample space to swim, which is necessary for the health of both fish species. It is advisable to keep them in schools and provide a large enough tank to support their activity and the goldfish’s needs.

White Cloud Mountain Minnow

White Cloud Mountain Minnows are suitable tank mates for goldfish, given their ability to live in cooler water and their schooling behavior. They are affordable and provide a visual appeal by swimming together. Originating from cool mountain streams, these minnows thrive in temperatures that goldfish tanks typically maintain without heaters.

These minnows are quick and can swim as fast as active goldfish, allowing them to coexist and compete fairly for food. They are peaceful and not prone to aggressive interactions.

For White Cloud Mountain Minnows, a minimum of a 10-gallon tank is necessary for comfortable schooling and a stable living environment. They are easy to take care of, making them a favored option for aquarists wishing to add to their goldfish tanks.

When choosing companions for goldfish, it’s important to consider the other species’ natural habitats and behaviors. White Cloud Mountain Minnows are a good choice due to their similar needs and temperament. Selecting such compatible fish can lead to a well-balanced aquarium.


Koi are suitable companions for goldfish in large, well-maintained tanks. They are similar in size to goldfish, which helps avoid competition and stress. Koi are adaptable, tolerating the same water conditions as goldfish and thriving in various temperatures.

Their longevity matches that of goldfish, creating a long-term, stable tank environment. Koi’s presence enhances the visual and dynamic aspects of the tank.

Nerite Snail

Nerite Snails are suitable tank mates for goldfish as they consume algae and reduce the need for manual tank cleaning.

They are non-aggressive and can live in the same conditions as goldfish, proving to be a resilient and low-maintenance addition.

They also have distinctive patterns that add to the tank’s visual appeal.

Mystery Snail

Mystery snails are suitable for goldfish tanks as they help clean by eating leftover food and decaying plants. They have bright colors and are non-aggressive, complementing the goldfish environment.

However, since goldfish may eat small snails, it’s important to choose larger mystery snails and feed goldfish properly.

Mystery snails have a hard operculum for protection, helping them coexist with goldfish. They are non-territorial and focus on cleaning the tank, promoting a peaceful tank setting.

Bamboo Shrimp

Bamboo shrimp are a peaceful addition to goldfish tanks. They filter-feed using fan-like appendages, helping to clean the water. They are non-aggressive and do not compete with goldfish for food or space.

These shrimp need an established tank with hiding places and steady water flow for feeding. A goldfish tank with microfauna ensures bamboo shrimp have enough natural food. High water quality is essential, requiring regular water changes and good filtration.

Bamboo shrimp grow to 3 inches and need space. They are generally not at risk of being eaten by goldfish, but tank mate compatibility should be assessed to ensure safety.

Ghost Shrimp

Ghost shrimp are suitable companions for goldfish in aquariums due to their clear bodies and cleaning behavior. They help keep the tank clean by eating leftover food and algae. Ghost shrimp are non-aggressive and mainly keep to themselves, making them good choices for tanks with goldfish.

It is important to avoid overcrowding the tank to prevent stress among ghost shrimp. They require sufficient space and hiding areas since they are naturally timid.

The activity of ghost shrimp provides entertainment as they actively search for food and explore the tank. When adding ghost shrimp to a goldfish tank, consider the tank size, population, and food availability to ensure all species are well-fed and healthy.

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