Best Tank Size for Arowana Fish

Best Tank Size for Arowana Fish

Best Tank Size for Arowana Fish

When it comes to keeping an Arowana fish, providing the right tank size is crucial for their health and well-being. Arowanas are majestic and fascinating creatures that require ample space to swim and thrive. In this article, we will explore the best tank size for Arowana fish and the factors you should consider when selecting the appropriate tank size.

Understanding the Arowana Fish

Arowana fish, also known as dragon fish or Asian bonytongues, are highly sought after in the aquarium hobby. They are known for their unique appearance, vibrant colors, and impressive size. Arowanas can grow up to three feet in length, making them one of the largest freshwater fish species kept in aquariums.

Factors to Consider When Choosing a Tank Size for Arowana Fish

Before deciding on the tank size for your Arowana fish, it’s essential to take several factors into consideration. These factors will ensure that your Arowana has a suitable environment to grow, swim, and thrive in.

Size and Growth Potential of Arowana Fish

Arowana fish can grow rapidly, especially during their juvenile years. It’s crucial to consider the potential size of the fish when choosing a tank. Arowanas can vary in size, with some species reaching lengths of up to three feet. It’s best to research the specific species of Arowana you have or plan to get, as different species have varying growth potentials. Aquarium Black 175 Gallon

Water Quality and Filtration Requirements

Arowanas require pristine water conditions to thrive. They are sensitive to poor water quality and can be susceptible to diseases if the water parameters are not maintained properly. A larger tank size can help dilute waste and toxins, providing a more stable environment for the fish. Adequate filtration is necessary to maintain excellent water quality and to ensure the removal of harmful substances.

Swimming Space and Natural Behavior

Arowana fish are active swimmers and enjoy having ample space to explore their surroundings. They have long bodies and large, powerful tails, allowing them to move swiftly through the water. Providing a spacious tank allows them to exhibit their natural behaviors, such as gliding near the water surface and hunting for food.

Compatibility with Other Fish

While Arowana fish can be kept with other fish species, it’s crucial to consider their compatibility. Some Arowanas can be aggressive towards smaller fish or those with long, flowing fins. Keeping Arowanas with suitable tankmates requires additional space to ensure everyone has enough room to coexist peacefully.

Future Expansion and Upgrades

As mentioned earlier, Arowanas can grow quite large. It’s important to consider the long-term growth potential of the fish when choosing a tank size. Providing a tank with room for future growth can save you from needing to upgrade to a larger tank down the line. Size of Silver Arowana: Revealing the Growth Patterns in Captivity

Recommended Tank Sizes for Arowana Fish

The ideal tank size for Arowana fish depends on their current size and anticipated growth potential. Here are some recommendations based on different Arowana sizes:

Small Arowana Fish (Less than 12 inches):

For small Arowanas, a tank size of at least 55 gallons is recommended. This provides enough swimming space while allowing for future growth. A tank measuring 48 inches in length, 13 inches in width, and 21 inches in height would be suitable for smaller Arowana fish.

Medium Arowana Fish (12 to 24 inches):

Medium-sized Arowanas require more space to accommodate their growth. A tank size of 125 gallons or more is recommended. Tanks measuring 72 inches in length, 18 inches in width, and 24 inches in height would provide adequate space for medium-sized Arowanas. Platinum Arowana For Sale

Large Arowana Fish (24 inches and above):

Large Arowanas need substantial tanks to support their impressive size. A tank size of at least 250 gallons or more is suitable. Tanks measuring 96 inches in length, 24 inches in width, and 30 inches in height would offer ample swimming space for large Arowanas. The Differences Between Albino and Red Arowana Fish

Additional Considerations for Arowana Fish Tanks

Apart from tank size, there are other factors to consider when setting up an Arowana fish tank:

Tank Shape and Dimensions:

While rectangular tanks are the most common choice, some aquarists prefer circular or bow-front tanks. Ensure that the tank shape and dimensions allow for adequate swimming space and can accommodate the fish comfortably. How to care for Arowana fish at home

Substrate and Decorations:

Choose a substrate that is appropriate for Arowanas, such as fine gravel or sand. Decorations like rocks, driftwood, and plants can provide hiding spots and mimic their natural environment.

Lighting and Temperature Control:

Arowanas appreciate well-regulated lighting and a stable temperature range. Use aquarium lighting that suits their needs and ensure the water temperature remains within the recommended range for their species.

Maintenance and Cleaning:

Regular maintenance, such as water changes and filter maintenance, is essential to keep the tank clean and the water quality high. Establish a routine for cleaning to ensure a healthy environment for your Arowana fish.


Choosing the best tank size for your Arowana fish is crucial for their overall well-being and happiness. Consider the size and growth potential of your Arowana, their swimming space requirements, water quality needs, and future expansion possibilities. Providing a suitable tank size will allow your Arowana to thrive and showcase its natural behaviors.

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