How Many Rainbow Sharks Can Live Together: Aquarium Housing Facts and Tips

Some experts recommend keeping only one rainbow shark in an aquarium at any given time, as they are powerful predators and territorial creatures and cannot accommodate their kind. Therefore, if you have a tank that can accommodate more than one rainbow shark, it’s best to space them out, so they don’t become territorial or aggressive towards each other.

Will Rainbow Sharks Attack Fellow Rainbow Sharks?

Some rainbow sharks can be a little territorial, but generally, they are relatively calm and docile creatures. They are, however, powerful predators that can inflict severe damage on their prey. So it’s essential to supervise your pet carefully and keep them appropriately fed if you want to keep them safe and happy.

Additionally, it’s best to keep rainbow sharks in an aquarium with plenty of room, so they don’t cause any damage to the tank or its inhabitants.

Aquarium Requirements When Keeping Rainbow Sharks Together

The requirements for keeping a rainbow shark in an aquarium are the same as for any other large predator. You will need space to swim and explore – at least 100 gallons is recommended – and plenty of plants and rocks to hide under or climb on.

A suitable filtration and heating system is also necessary to keep the tank at a healthy temperature. So, if you’re considering adding a rainbow shark to your aquarium, check out our full range of supplies and accessories.

Water Conditions

The water conditions of a community tank with rainbow sharks should be similar to those of the shark’s native habitat. This means good quality water with moderate hardness and pH around 6-8. Therefore, a good quality water filter is needed to remove waste and impurities.

Water Parameter

Rainbow sharks are tropical fish and, as such, prefer warm water. They should be kept in a tank with temperatures between 75-81 degrees Fahrenheit. Additionally, they should have access to a hiding spot or cave in the tank where they can retreat during cooler periods.


To ensure the water quality in your tank is suitable for rainbow sharks, you will need to install a good quality filter. In addition, a bio-filter will help to keep the aquatic community healthy and reduce harmful ammonia levels.

Plants and Decorations

While rainbow sharks may not be the most aesthetically pleasing fish in your tank, adding plants and decorations to the tank will offer a variety of food and hiding places for your rainbow shark. Additionally, these items can help to tame the environment and provide a sense of order.

Can Rainbow Sharks Live in a Community Tank?

Yes, rainbow sharks can live in a community tank provided they are given enough space and the tank is big enough to roam around. So be careful, as these predators can be dangerous if left unchecked.

It’s best to keep at least one additional fish or other aquatic creature in the tank with your rainbow sharks to help ensure their safety. So, if you’re considering getting a rainbow shark for your aquarium, remember to give them plenty of space and supervision.

How Many Rainbow Sharks Can Live in a 100-Gallon Community Tank?

A 100-gallon community tank can accommodate up to three rainbow sharks. Be sure to provide them with plenty of space, so they don’t become territorial or aggressive towards each other.

In addition, be sure to feed them properly and keep the tank clean, so they don’t get sick. So, if you’re looking to add a rainbow shark to your aquarium, consider a tank of this size. Lastly, be sure to keep an eye on them and make sure they stay healthy.

Rainbow Sharks Compatibility and Tankmates

Rainbow sharks are generally peaceful and gentle animals, but they can be territorial if they feel threatened. So, keep other fish or aquatic creatures in the tank to help ensure their safety and avoid conflicts.

Additionally, rainbow sharks are scavengers and should be fed a diet of live food such as worms or small fish. Please do not give them junk food, as this will only create problems in their tank and may even get them sick.

As with all pets, it’s always best to consult your veterinarian before adding a rainbow shark to your home aquarium.


Rasboras are a great tank mate for rainbow sharks. They are scavengers and will eat any food you give them, including fish flakes or frozen diet pellets. Rasboras also make excellent watch animals because they can sense movement in the water even if they’re hidden.

This makes them perfect for an aquarium where predators such as rainbow sharks live, as they will be alerted of any potential danger before it becomes imminent.


Danios are also good tank mates for rainbow sharks. They prefer to live near the tank’s surface, where they can see better. This is perfect for an aquarium with much other fish as it means there’s less likelihood of them getting eaten by one of those larger predators.


While not strictly a tank mate for rainbow sharks, gouramis are another great option. They prefer to live in small groups and can be pretty active, so they’re perfect for an aquarium where there’s plenty of activity.

As well as eating some of the fish food left behind by other tank inhabitants, gouramis love to sunbathe on rocks or logs near the water’s surface. This attracts more prey into their territory so they can clean it up – similar to what rainbow sharks do in nature!

Rainbow Fish

A rainbowfish can be a great tank mate for a rainbow shark. They are non-predatory fish and will only compete for food with other small fish in the tank. Rainbowfish also prefer to live in groups, which is perfect for an aquarium with another large predator like a rainbow shark.

Fish to Avoid

While all fish can be a good tank mate for a rainbow shark, there are some that you should avoid. These include larger predatory fish like tuna or barracuda, which may view the rainbow shark as prey.

Additionally, large cichlids and other tropical fish may become territorial when introduced to an aquarium with a rainbow shark – this could lead to competition for food and potential injuries on both sides.