Ruby Rasbora

The Ruby Rasbora (Paedocypris progenetica) is a remarkable species native to the peat swamp forests of Southeast Asia, particularly in Indonesia. Known for their striking coloration, these tiny fish exhibit an iridescent ruby hue that can captivate any aquarist. They are among the smallest known vertebrates, with a maximum size of just 1.1 cm, making them an extraordinary choice for nano aquariums.

In terms of natural history, Ruby Rasboras thrive in shallow, densely vegetated waters, where they seek cover among the leaf litter and aquatic plants. Their habitat is characterized by soft, acidic waters with low light conditions, giving them a unique ecological niche. This environment influences their behavior; they are known to be peaceful and social, often schooling in small groups, which enhances their visual appeal in aquascapes.

The appearance of the Ruby Rasbora is particularly striking. Their body is elongated and streamlined, adorned with vibrant scales that shimmer in light. This coloration serves as a form of camouflage against predators in their natural habitat. In terms of behavior, they are active swimmers that prefer to remain in the middle to upper levels of the water column, making them an engaging species to observe in aquariums.

Due to their small size and specific habitat requirements, Ruby Rasboras are best suited for well-planted tanks with plenty of hiding spots. They thrive in groups, which promotes their natural schooling behavior and reduces stress, making them a delightful addition to community tanks with compatible species.

When caring for Ruby Rasboras, it is essential to replicate their natural habitat as closely as possible. The recommended water parameters include a temperature range of 24-28°C, a pH level between 5.5 and 7.5, and a soft water environment with a maximum hardness of 10 dGH. Frequent water changes are vital to maintain water quality and health.

Feeding Ruby Rasboras is simple, as they are omnivorous. A varied diet of high-quality flake food, micro-pellets, and small live or frozen foods such as brine shrimp or daphnia will ensure their nutritional needs are met. It’s important to feed them small portions multiple times a day to mimic their natural feeding habits.

Compatibility is key when housing Ruby Rasboras. They are peaceful and can coexist with other small, non-aggressive fish. Ideal tank mates include other small Rasboras, Tetras, and small shrimp species. When introducing them to a new tank, acclimation should be done slowly to minimize stress; floating the bag in the tank for 15-20 minutes before releasing them is recommended.

Quarantine new arrivals for at least two weeks to monitor for any signs of disease, as this helps maintain the health of your main aquarium. With proper care, Ruby Rasboras can thrive and provide a stunning display in your aquarium.

Ruby Rasboras are suitable for shipping, but care must be taken to ensure their well-being during transit. Packing density should be low to avoid stress, with ample oxygen and water in the bags. They are sensitive to temperature fluctuations; thus, maintaining a stable temperature between 24-28°C during shipping is crucial. As a CITES-listed species, ensure compliance with international trade regulations.