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Mealworms as treats for Arowana

Updated: Dec 30, 2025

Arowanas are freshwater bony fish also known as bony tongues. In this family of fish, the head is bony, and the elongated body is covered by large, heavy scales, with a mosaic pattern of canals. Depending on the classification system used, there are 10 types of arowana commonly kept as pets: 4 from Asia, 3 from South America, 2 from Australia, and 1 from Africa. The Asian arowana is an endangered species and banned in the United States. It is a status symbol among wealthy Asian men. An albino arowana sold for a record price of $300,000 in 2009. Most pet Arowana are farmed behind high-security fences. For a complete understanding of diet and care, read The Ultimate Arowana Fish Food Guide for Healthy Growth and Vibrant Colour.

Arowanas are solitary fish and only allow company while young; adults may show dominance and aggression. Some compatible species often partnered with this fish are clown knifefish, pacu, oscars, jaguar cichlids, green terrors, gar, tinfoil barb, Siamese tigerfish, and any other somewhat aggressive fish that cannot fit in the arowana's mouth. Diet and feeding routine directly influence aggression and growth, which is explained in Arowana Fish Feeding Guide: Perfect Diet and Live Food Choices for Healthy Growth.

The natural diet of the three Scleropages species varies from fish, frogs, insects, invertebrates, and even some plant matter, crickets, locusts, giant mealworms, and wax moth larvae. Earthworms would also be suitable.

Mealworms are healthy and nutritious for Arowanas. One of the common foods fed to arowana is the Tenebrio molitor larvae, also known as yellow mealworm. Mealworms in the diet play an important role in the nutrition of these fish. Mealworms are the food that is a healthy, energy-rich, and protein-rich alternative. Dried mealworms are a protein-rich treat that will be welcomed by all wildfowl. Protein is important all year round. The importance of insects in an Arowana’s natural diet is covered in The Advantages of Feeding Your Arowana Insect-Based Diets.


Watch a video of these birds enjoying mealworms:

Mealworms are nutritious insects that are high in protein and fat. They are a good food for birds, reptiles, fish, small animals, and even people. Mealworms are the larvae of the mealworm beetle, Tenebrio molitor, also called the darkling beetle or tenebrio beetle. The larvae may also be called yellow mealworms or golden grubs, and they're pure gold for the birds that eat them. These insects are a rich source of protein that is necessary for muscle development. Before adding insects regularly, read What Are Mealworms? Are They Safe to Feed to Pets?.

Mealworms generally contain nutritional values as follows:

Live Mealworm Nutritional Values*

  • Protein: 21%

  • Fat: 12%

  • Fiber: 2%

  • Water: 63%

Dried Mealworm Nutritional Values*

  • Protein: 52%

  • Fat: 27%

  • Fiber: 6%

  • Water: 6%

*Approximate values (Proportion may vary)

Improper feeding can lead to health issues, which are discussed in Arowana Fish Health: Common Diseases and Their Treatments.

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