Boraras Micros

Datasheet

General Description

The Boraras Micros, commonly known as the "Rasboras," is a small and peaceful species that thrives in a group setting. It is a schooling fish that displays interesting behaviors, especially during mating rituals. This species is often best kept with other diminutive species or in a planted aquarium environment.

Aquarium Setup

The Boraras Micros is best housed in a densely-planted aquarium with floating plants and driftwood to diffuse light. A biologically-mature tank with gentle filtration and stable water conditions is ideal for these fish. It is recommended to avoid introducing them to environments with fast currents or significant water chemistry fluctuations.

Behaviour

The Rasboras are known for their peaceful nature but may not thrive in a community tank due to their small size and timid behavior. Keeping them in groups of at least 8-10 specimens helps reduce their nervousness and creates a natural display. Males may exhibit competitive behavior while vying for female attention. They are compatible with shy anabantoids and freshwater shrimp in a planted setup.

Feeding and Diet

As micropredators, Boraras Micros feed on small insects, worms, crustaceans, and zooplankton in their natural habitat. In captivity, they accept a variety of foods, including small live and frozen options like Daphnia and Artemia. A diet of quality flakes, granules, and occasional live foods enhances their coloration and prepares them for breeding.

Reproduction & Dimorphism

Breeding Boraras Micros is achievable in captivity through egg scattering and continuous spawning. While adults show no parental care, controlled breeding in dimly-lit, planted containers can yield fry. Mature females are typically larger and rounder-bellied than males. Young fry require microscopic foods initially and progress to larger options as they grow.

Habitat and Distribution

In the wild, Boraras Micros inhabit shallow bodies of water such as swamps, marshes, and rice paddies with dense submerged vegetation. They are primarily found in the Mekong basin in Thailand and Laos. Specific localities like Bung Khong Long in Nong Khai province showcase diverse aquatic plant species and cohabiting fish species like Betta and Clarias batrachus.