Axelrod Rasbora

Axelrod Rasbora
Latin name:
(Rasbora axelrodi)

Care Level








Preferred Conditions

73-79° F, KH 2-5, pH 6.0-7.5

Avg. Max Size

Minimum Tank Size

10 gallons


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Are you fascinated by the vibrant colors and lively behavior of tropical fish? If so, then the Axelrod Rasbora is a species that you won’t want to miss. This captivating fish is a true delight to observe, with its iridescent scales and playful personality. Whether you’re a seasoned aquarist or just starting out, the Axelrod Rasbora is sure to capture your heart.

Axelrod Rasbora: An Overview

The Axelrod Rasbora, scientifically known as Rasbora Axelrodi, is a small but striking fish native to Southeast Asia. It typically grows to a length of about 2 inches and is characterized by its elongated body, vibrant red fins, and iridescent scales that shimmer in the light. Axelrod Rasboras are schooling fish, meaning they prefer to live in groups, and they are known for their peaceful and playful behavior.

Characteristics and Appearance

  • Body Shape: The Axelrod Rasbora has an elongated, torpedo-shaped body with a slightly arched back.
  • Coloration: The most striking feature of the Axelrod Rasbora is its vibrant coloration. The body is typically a silvery-white color with iridescent scales that shimmer in the light. The fins are usually bright red, and the males often have a black stripe running along the side of their bodies.
  • Size: Axelrod Rasboras are relatively small fish, typically reaching a maximum length of about 2 inches.

Habitat and Distribution

  • Natural Habitat: The Axelrod Rasbora is native to Southeast Asia, where it inhabits slow-moving streams and rivers with dense vegetation.
  • Water Parameters: In the wild, Axelrod Rasboras prefer warm, acidic water with a pH between 6.0 and 7.0 and a temperature range of 72°F to 82°F.

Care and Maintenance

Providing proper care for your Axelrod Rasboras is essential for their health and well-being. Here are some key factors to consider:

Tank Size and Setup

  • Tank Size: A 10-gallon tank is the minimum recommended size for a small group of Axelrod Rasboras. However, a larger tank is always better, as it will provide more swimming space and help to reduce aggression.
  • Substrate: Axelrod Rasboras prefer a fine-grained substrate, such as sand or gravel, that is easy to clean and won’t damage their delicate fins.
  • Plants and Decorations: Axelrod Rasboras appreciate a well-planted tank with plenty of hiding places. Live plants are ideal, as they help to provide oxygen and filtration, but artificial plants can also be used.

Water Quality and Filtration

  • Water Quality: Axelrod Rasboras require clean, well-filtered water. Regular water changes are essential to maintain good water quality and prevent the buildup of harmful toxins.
  • Filtration: A good quality filter is essential for keeping the water clean and free of debris. A sponge filter or a power filter with a gentle flow rate is recommended.

Diet and Feeding

  • Diet: Axelrod Rasboras are omnivorous and will accept a variety of foods, including live, frozen, and freeze-dried foods. A high-quality flake food or pellet food should be the staple of their diet, supplemented with live or frozen foods such as brine shrimp, daphnia, and bloodworms.
  • Feeding Schedule: Feed your Axelrod Rasboras small amounts of food several times a day. Overfeeding can lead to health problems, so it’s important to avoid giving them more food than they can eat in a few minutes.


Breeding Axelrod Rasboras is relatively easy, but it does require some preparation and attention to detail.

Breeding Tank Setup

  • Breeding Tank: A separate breeding tank is ideal for raising Axelrod Rasbora fry. A 10-gallon tank is a good size for a small group of breeding pairs.
  • Substrate: Use a fine-grained substrate, such as sand or gravel, that is easy to clean and won’t damage the eggs.
  • Plants and Decorations: Provide plenty of plants and hiding places for the fry. Java moss and floating plants are good choices.

Breeding Process

  • Conditioning the Breeders: Before breeding, condition the breeding pairs with a high-quality diet and frequent water changes.
  • Introducing the Breeders: Introduce the breeding pairs to the breeding tank in the evening. The lights should be turned off to reduce stress.
  • Spawning: Axelrod Rasboras typically spawn in the morning. The male will chase the female around the tank, and she will release her eggs while he fertilizes them. The eggs will sink to the bottom of the tank.
  • Raising the Fry: After the eggs hatch, the fry will need to be fed small live foods, such as infusoria or newly hatched brine shrimp. Once they are large enough, they can be fed a diet of flake food or pellet food.

FAQs About Axelrod Rasbora

  1. Q: How many Axelrod Rasboras can I keep in a 10-gallon tank?
  2. A: You can keep a small group of 6-8 Axelrod Rasboras in a 10-gallon tank.
  3. Q: What is the ideal water temperature for Axelrod Rasboras?
  4. A: The ideal water temperature for Axelrod Rasboras is between 72°F and 82°F.
  5. Q: How often should I feed my Axelrod Rasboras?
  6. A: Feed your Axelrod Rasboras small amounts of food several times a day. Avoid overfeeding.


The Axelrod Rasbora is a captivating and easy-to-care-for fish that is perfect for both beginner and experienced aquarists. With its vibrant colors, playful personality, and peaceful nature, the Axelrod Rasbora is sure to bring joy to any aquarium.