Size of Silver Arowana: Revealing the Growth Patterns in Captivity and the Wild

Comparison of Silver Arowana sizes

From Captivity to the Wild: Exploring Arowana Size Differences

The size of a Silver Arowana, one of the most majestic freshwater fish species, is a topic of great interest for fish enthusiasts and aquarium owners. Understanding the size variations between Arowanas in captivity and the wild is crucial for providing optimal care and ensuring their well-being. In this article, we will delve into the size differences between Silver Arowanas in captivity and the wild, explore the factors that influence their growth, and provide valuable tips for promoting healthy growth. Let’s dive in!

Size of Silver Arowana in Captivity

When kept in captivity, the typical size of a fully grown Silver Arowana is almost 3 feet long [1] These majestic fish can reach massive proportions, captivating the attention of any onlooker. However, it’s important to note that the size of Silver Arowanas in captivity is generally smaller compared to their wild counterparts. In captivity, they rarely exceed 3 feet in length or 36 inches [2]. The limited growth in captivity is influenced by various factors, including their environment and care. The Differences Between Albino and Red Arowana Fish

Size of Silver Arowana in the Wild

In their natural habitat, Silver Arowanas have the potential to grow even larger than those in captivity. Specimens measuring nearly 4 feet long have been recorded, showcasing the true magnificence of these fish [1]. In the wild, the Silver Arowana size can reach remarkable lengths, with reports of up to 47 inches (120 cm) during their lifetime [5]. The wide-ranging territories and abundant food sources in their natural habitats contribute to their substantial growth. Silver Arowana For Sale

Factors Influencing Arowana Size

The size variation between Silver Arowanas in captivity and the wild can be attributed to several key factors. First and foremost, the size of their habitat plays a crucial role. A larger tank or aquarium provides more swimming space, allowing Arowanas to exercise and grow to their full potential. Professional aquarists recommend a tank size of at least 134 gallons or more than 500 liters for Silver Arowanas [7]The length of the tank should be at least three times longer than the fish, and the width should be more than 1.2 times the fish’s size [6].

Another significant factor is the diet of Silver Arowanas. In the wild, they are known to be carnivorous, feeding on small fish, snails, and crustaceans [4]. Proper nutrition is vital for their growth and overall health. In captivity, feeding Silver Arowanas 2 to 3 times a day with a balanced diet is recommended [3].  Providing a varied diet that mimics their natural feeding habits can contribute to their growth potential.

Care Tips for Promoting Healthy Growth

To ensure the optimal growth and well being of your Silver Arowana, here are some essential care tips:

Provide Adequate Tank Size: As mentioned earlier, the size of the tank or aquarium is crucial for the growth of Silver Arowanas. Ensure that the tank is spacious enough to accommodate their active nature. The recommended tank size is at least 134 gallons or more than 500 liters, with dimensions that allow for unrestricted swimming [7].

Maintain Water Quality: Clean and well-maintained water is vital for the health and growth of your Silver Arowana. Regular water changes, filtration, and monitoring of water parameters such as temperature, pH, and ammonia levels are necessary. Consider investing in a high-quality filtration system to ensure optimal water quality. Silver Arowana For Sale

Offer a Balanced Diet: Providing a nutritionally balanced diet is essential for promoting healthy growth. Along with commercial fish pellets, include live or frozen foods such as small fish, shrimp, and insects to replicate their natural diet [4]. Ensure that the food is appropriate in size and easily digestible.

Maintain Consistent Feeding Schedule: Silver Arowanas thrive on a regular feeding schedule. Feed them 2 to 3 times a day, offering an amount that they can consume within a few minutes. Avoid overfeeding, as it can lead to health issues and stunted growth.

Provide Enrichment and Hiding Spots: Arowanas are intelligent and curious fish that benefit from environmental enrichment. Incorporate driftwood, rocks, and plants into their tank to create hiding spots and mimic their natural habitat. This helps reduce stress and promotes natural behavior. About Us

Monitor Tankmates: Silver Arowanas are known to be predatory fish and may prey on smaller tank mates. Carefully choose compatible tankmates that won’t become prey or pose a threat to your Arowana. Research the compatibility and size requirements of potential tankmates before introducing them. The Most Unique and Rare Aquarium Fish: The Platinum

Observe and Respond to Behavior: Regularly observe your Silver Arowana for any signs of distress, disease, or abnormal behavior. Promptly address any issues that arise, such as changes in appetite, swimming patterns, or physical appearance. Consult a knowledgeable aquarist or veterinarian if needed.


Understanding the size variations between Silver Arowanas in captivity and the wild is essential for providing optimal care and ensuring their well-being. While captive Arowanas typically reach around 3 feet in length, their wild counterparts can grow even larger. Factors such as habitat size, diet, and overall care play significant roles in their growth potential. By providing a suitable environment, balanced diet, and attentive care, you can promote the healthy growth of your Silver Arowana and enjoy the splendor of these magnificent fish.


How fast does Silver Arowanas grow?

Silver Arowanas can grow relatively quickly, especially in their early stages. With proper care and nutrition, they can experience noticeable growth within a few months.

Can Silver Arowanas outgrow their tank?

Yes, Silver Arowanas have the potential to outgrow their tank if it’s not adequately sized. Providing a spacious tank from the beginning helps accommodate their growth and prevents stunted development.

Can Silver Arowanas be kept with other fish?

Silver Arowanas are known to be predatory fish and may prey on smaller tankmates. It’s important to choose compatible tankmates that are similar in size and behavior to ensure a harmonious community tank.

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