Female Arapaima Gigas fish 9cm

Female Arapaima Gigas (9 cm Juvenile)

The Female Arapaima Gigas is one of the most extraordinary freshwater fish available to dedicated aquarists. Known as one of the largest freshwater species in the world, Arapaima Gigas originates from the Amazon Basin, where it has been revered for centuries. At just 9 cm in size, this juvenile represents the very beginning of an incredible growth journey, offering aquarists the chance to raise a true river giant from a young age.

Arapaima Gigas is famous for its immense size, striking scales, and fascinating ability to breathe both air and water. In the wild, adults can exceed 2 meters (6.5 feet) in length and weigh several hundred pounds, making them a true centerpiece species. Because of this, keeping even a juvenile female Arapaima requires careful planning and long-term dedication. Aquarists should be prepared with a very large aquarium or an indoor pond, as this fish will quickly outgrow smaller enclosures.

At the juvenile stage of 9 cm, the Female Arapaima Gigas adapts well to controlled environments when provided with stable water conditions and a protein-rich diet. Water parameters should be maintained at a temperature of 75–82°F (24–28°C) with a pH of 6.0–7.5. Since these fish surface regularly to breathe atmospheric oxygen, aquariums should have open swimming space, minimal obstructions at the surface, and a secure cover to prevent escapes.

Feeding a young Arapaima Gigas involves offering a mix of small, protein-based foods such as bloodworms, chopped shrimp, and quality carnivore pellets. As it matures, its diet will expand to include larger prey items like fish and crustaceans. Due to their rapid growth, it is vital to provide consistent, nutritious feeding while monitoring portion sizes to avoid water quality issues.

The Female Arapaima Gigas is generally hardy but requires a highly dedicated aquarist with the space and resources to house it for life. Its beauty, intelligence, and impressive size make it one of the most rewarding freshwater fish for advanced keepers. For detailed scientific data on the species, visit FishBase.

Frequently Asked Questions (FAQs)

1. How big does a Female Arapaima Gigas grow?
In captivity, they can reach 2 meters (6.5 feet) or more with proper care.

2. What size tank is required?
A large custom aquarium or indoor pond is essential, with thousands of liters of water capacity as the fish grows.

3. What should I feed a 9 cm juvenile?
Start with bloodworms, shrimp, and small pellets, then transition to larger foods as it matures.

4. Can Arapaima Gigas live with other fish?
They are best kept alone, as they may prey on tankmates once they grow.

5. How long do they live?
With proper care, they can live 15–20 years in captivity.