More info
Datasheet
| Minimum Tank Size | 40 litres / 10.57 US gallons |
| Maximum Size | 2.5cm / 0.98inches |
| Temperature | 20°C / 68.00°F - 28°C / 82.40°F |
| Hardness | 1.01dgH / 18ppm - 5.04dgH / 90ppm |
| pH | 4.0-6.5 |
General Description
The Dwarf Rasbora (Boraras Maculatus) is a small, peaceful fish that reaches a maximum size of 2.5cm. They are a schooling species that thrives when kept in groups of at least 8-10 individuals. This species is an egg-scattering, continuous spawner with zero parental care.
Aquarium Setup
The Dwarf Rasbora is best kept in a densely-planted aquarium with floating plants, roots, or branches to diffuse light. Filtration should not be strong, as they prefer sluggish waters. A soft, sandy substrate, dried leaf litter, and dim lighting simulate their natural habitat. Aquatic plants like Microsorum pteropus and Cryptocoryne spp. are suitable choices. It is vital to avoid introducing them to a biologically-immature aquarium.
Behaviour
This species is peaceful but not suited for a community tank due to its timid nature and small size. They do well when kept with other small, diminutive species or shy anabantoids. In a planted setup, they can coexist with freshwater shrimp. Males exhibit vibrant colors and compete for female attention within the group.
Feeding and Diet
In the wild, Dwarf Rasboras feed on small insects, worms, crustaceans, and zooplankton. In captivity, they accept dried foods but thrive on a diet of small live and frozen fare like Daphnia and Artemia. Varied meals help maintain their coloration and reproductive health.
Reproduction & Dimorphism
Mature females are rounder-bellied and slightly larger, while males are more colorful. These fish spawn daily, laying relatively small numbers of eggs. Fry can be raised in a separate breeding container with dim lighting, pH of 5.0-6.5, and temperature around 28°C.
Habitat and Distribution
Dwarf Rasboras inhabit black water streams and rivers in ancient forest peat swamps. They reside in soft, acidic, dimly-lit waters with a pH as low as 4.0. Their distribution ranges from Peninsular Malaysia to southern Thailand, Sumatra, and parts of Indonesia. Their slender body profile differentiates species from the Malay Archipelago and Indochina.