Rasbora Borapetensis

Datasheet

General Description

Rasbora Borapetensis is a commonly seen species in aquarium stores and is recommended for beginners in the hobby. It may appear dull in color initially but brightens up when settled. It is often sold under names like black-line or magnificent rasbora. This species belongs to the Cyprinidae family and thrives in various water conditions, making it adaptable to different tank setups.

Aquarium Setup

The Rasbora Borapetensis does well in a community tank with other small fish species. A tank of at least 70 liters is recommended, with decorations such as plants, driftwood, and dark substrate to enhance its coloration. Filtration should be gentle to mimic the fish's natural habitat, which is usually slow-flowing waters. Water parameters should be maintained at a pH of 6.0-7.5, hardness of 2-12 dH, and a temperature of 22-26°C.

Behaviour

This species is known for its peaceful nature, making it an excellent addition to community tanks. Rasbora Borapetensis is a schooling fish and thrives best in groups of 8-10 individuals. In larger numbers, the fish exhibit less stress and display vibrant colors, especially during breeding when males compete for females' attention.

Feeding and Diet

Rasbora Borapetensis is a micropredator, feeding on small insects, worms, and crustaceans in the wild. In the aquarium, a varied diet is essential for optimal health and coloration. While they accept dried foods, a diet supplemented with live and frozen foods like Daphnia and Artemia enhances coloration and stimulates breeding behavior.

Reproduction & Dimorphism

This species follows egg-scattering spawning behavior without parental care. Controlled breeding setups with dim lighting and mesh-covered containers can increase fry survival rates. Male Rasbora Borapetensis are slimmer, smaller, and more brightly colored compared to females. Spawning can result in batches of 30-50 eggs which hatch within 24-48 hours.

Habitat and Distribution

Natively found in the Mekong and Chao Phraya river drainages, as well as the Mae Klong in Thailand, Rasbora Borapetensis has a broad distribution across Southeast Asia, including Cambodia, Laos, and Vietnam. It tolerates polluted waters and prefers shallow, slow-flowing habitats such as ponds, reservoirs, and canals. Commercial breeding has reduced the availability of wild-caught specimens in the aquarium trade.