How Many Tiger Barbs in a 20-Gallon Tank: Guide to Perfect Aquarium Setting

If you want to add tiger barbs to your aquarium, make sure you have the right tank size and supplies. A 20-gallon tank is the perfect size for a single tiger barb and will provide enough space for them to grow and thrive.

There are typically five to six tiger barbs in a 20-gallon tank since a single tiger barb needs at least three to four gallons of the tank to thrive. In addition, there should be at least one adult tiger barb per every five to six juveniles.

Minimum Tank Size for Tiger Barbs

Keeping tiger barbs healthy and happy is essential for their long-term success. One of the most important things you can do to ensure their well-being is to keep them in a size-appropriate tank. 

The minimum tank size for tiger barbs is 20 gallons, but larger tanks are also recommended for those with more fish. Make sure to water your tigers regularly and de-clutter their habitat to help them feel comfortable and happy. In addition, tiger barbs are social fish and will thrive in a tank with other tiger barbs. So if you have the space, get them a tank of their own!

How Many Tiger Barbs Should I Get?

Since there are so many variables when it comes to keeping tiger barbs, such as water quality and tank size, it is best to talk to a knowledgeable fish retailer or reptile store about your specific needs. However, a general guideline for how many tigers you should get for your tank is anywhere from one to three per five gallon of tank space.

Tiger Barb Housing Requirements

Be prepared to purchase more tiger barbs as they grow quickly and are known for being very active fish. You will also need to provide them with plenty of hiding spots and caves, as tigers like to be solitary creatures. Make sure the water is clean and debris-free, or your tiger barb may not survive. Lastly, be sure to provide plenty of hiding spots for them during the day so they can be active.

Water Temperature

Tiger barbs are a great fish to keep in your tank – they tolerate water temperatures of any season and can be added anytime. Make sure the water is warm enough for them, as this fish does better in warmer waters. The water temperature for these fish should be 77 to 82 degrees Fahrenheit.

Water Hardness

They require hard water to thrive, so make sure your water is at least a 5-19 dGH on the hardness scale if you want them to survive and grow healthy. If you’re unsure about adding any new fish to your tank, contact your fish store first – they will be able to recommend the correct number of tiger barbs for your tank size and type of water. Alternatively, you can buy tiger barb fish food designed for hard water tanks.

Water pH

Water pH is an essential factor to consider when adding tiger barbs to your tank. This fish needs a water pH of 6.0-8.0 to survive and thrive, so you must adjust the pH before introducing them into the tank. Ensure all your equipment is correctly sterilized before getting started – including the tank, tubing, and filter!


Tiger barbs are suitable for filtration as they eat small particles, which you will then remove from the water. It is vital to keep them in a tank that has enough space and should have a filter-feeding fish so that they can get their food. Fake tiger barbs are also available but may not provide the same level of filtration as an actual live animal, so it is recommended to buy a real one instead. The more tiger barbs you have, the better your tank’s filtration will be and the less maintenance you will need.


Tiger barbs do not require any special lighting requirements. Instead, they can live in low-light environments, so you don’t need to buy any specialized lighting for them. For example, some people add a lighted plant or bogwood floater to their tank as an additional form of enrichment and decoration.


A substrate is essential when it comes to keeping tiger barbs healthy and happy. There are many options available on the market, so choosing one that will be compatible with your fish and tiger barbs is essential. Once you have chosen the suitable substrate, pour it into your tank and wait for the tiger barbs to arrive! Once they do, take care of them by providing them with their ideal water conditions and regular feedings.


Tiger barbs do not require any plants in their tank, but some people like to add one to make the tank more aesthetically pleasing. Many different types of plants can be used, so feel free to choose one that you think will suit your fish and tiger barb’s needs.

Rocks & Decorations

There are a lot of options when it comes to rocks and decorations for your tank. You can choose between adding them as rocks or using them as decoration pieces. And, if you want to go all out with the looks, tiger barbs are perfect! Of course, you should ensure that you buy the correct size for your tank – 20 gallons is the minimum required size. This will help maintain compatibility in terms of color and design among different rocks and decorations.

Tank Mates

Tiger barbs are generally peaceful fish but do well in a community tank. When selecting your tank mates, consider their compatibility before adding them to your household. For example, do not add tiger barbs to a tank with smaller fish they may be able to eat.

Compatibility of Tiger Barb

The tiger barb is a fish that can be pretty territorial. So, if you’re looking for a compatible fish for your tank, you may consider choosing another type of fish. Other types of fish that would work great in a 20-gallon tank with tiger barbs include:

  • Goldfish
  • Rosy barb
  • Cherry barb
  • Cory catfish
  • Most types of Pleco

Breeding of Tiger Barb

There is no sure way to breed tiger barbs, but it can be done using methods such as live-bearing or spawning. So, for example, suppose you’re looking to breed tigers barb. In that case, it’s best to consult with a reputable fish breeder who will be able to help you select the correct type of aquarium and provide all the necessary information.

Tiger Barb Diseases

Tiger barbs are generally healthy fish but can still be prone to diseases. If you notice any signs of illness such as drooping fins, swim bladders that are bloated or red, and a loss in appetite or energy, it’s essential to take your fish to the veterinarian for a check-up.