Brittan’s rasbora - Rasbora brittani

Scientific name: Rasbora brittani

Common name: Brittan’s rasbora

Family: Cyprinidae

Usual size in fish tanks: 4 - 5 cm (1.57 - 1.97 inch)

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Recommended pH range: 6.2 - 7

Recommended water hardness: 3 - 15°N (53.57 - 267.86ppm)

0°C 32°F30°C 86°F

Recommended temperature range: 22 - 26 °C (71.6 - 78.8°F)

The way how these fish reproduce: Spawning

Where the species comes from: East Asia

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Top levels

Short Description

Rasbora brittani, also known as Brittan’s rasbora, is a peaceful and elegant schooling fish originating from Southeast Asia. Known for its slender body and graceful swimming style, this species prefers the upper levels of the aquarium and thrives in soft, slightly acidic water. Due to its sensitivity to poor water quality, it is recommended for aquarists with some experience in maintaining stable tank conditions.

Origin

Rasbora brittani is native to Southeast Asia and can be found in slow-moving waters in Malaysia, Thailand, and Sumatra. In their natural habitat, they live among submerged vegetation and leaf litter in shaded forest streams.

Usual Size

In home aquariums, this species usually reaches a length of 4–5 cm (1.57–1.97 inches).

Tank Requirements

pH range: 6.2 – 7.0
Water hardness: 3 – 15 °dGH (53.57 – 267.86 ppm)
Temperature: 22 – 26 °C (71.6 – 78.8 °F)
Tank level: Top

A densely planted aquarium with soft, well-filtered water is ideal. Leave some open swimming space, as Brittan’s rasboras are active swimmers and enjoy room to move in groups.

Temperament and Compatibility

This species is peaceful toward both its own kind and other fish. It is ideal for community tanks with other small, non-aggressive fish. They feel safest and display natural behavior when kept in schools of at least 6 individuals.

Feeding

Brittan’s rasboras are not fussy eaters. A high-quality flake or micro pellet should form the basis of their diet. To enhance their health and coloration, supplement their meals 2–3 times per week with live or frozen foods such as bloodworms, Tubifex, brine shrimp, or daphnia. A varied diet will encourage activity and enhance their natural colors.

Sexing

Sexual dimorphism is subtle. Males tend to be more slender, while females often have a rounder body shape, especially when viewed from above.

Breeding

Although breeding in captivity is rarely reported, it is believed that Rasbora brittani are egg scatterers in the wild. They spawn among plants and release their eggs freely into the water. Fry are very slow-growing and can take up to 2–3 years to reach sexual maturity. Replicating their natural habitat with fine-leaved plants and soft, acidic water may improve breeding success in an aquarium setting.

Lifespan

The average lifespan of Rasbora brittani is approximately 6 years when kept in stable and clean water conditions.

Additional Tips

Perform regular water changes to maintain good water quality.
Use a gentle filter to simulate their natural slow-moving waters.
Dim lighting and floating plants can help reduce stress.

❓ Frequently Asked Questions about Rasbora brittani

❓ Can Rasbora brittani be kept with other rasbora species?

Yes, they are peaceful and can coexist with other small, non-aggressive rasbora species in a well-maintained community tank.
❓ How many Brittan’s rasboras should be kept together?

They are schooling fish and should be kept in groups of at least six individuals. Larger groups will reduce stress and encourage natural behavior.
❓ Is Rasbora brittani suitable for beginner aquarists?

They can be suitable for moderately experienced aquarists who are comfortable maintaining consistent water parameters. Their sensitivity to poor water quality makes regular maintenance important.
❓ Do these fish need a heater?

Yes, they prefer tropical temperatures between 22–26 °C (71.6–78.8 °F), so a heater is recommended to maintain stable conditions.
❓ Will Rasbora brittani eat baby shrimp?

While they are peaceful, they may eat very small shrimp or shrimp fry if the opportunity arises. They are generally safe with adult dwarf shrimp in a densely planted tank.
❓ Why are my Rasbora brittani hiding or not swimming actively?

This may be due to stress from poor water quality, aggressive tankmates, or too few individuals in the group. Check water parameters and ensure they are in a proper group.