Chili Rasbora Blog

The Chili Rasbora is a tiny vibrant freshwater fish known for its intense red coloration and peaceful nature. Native to slow moving blackwater streams and peat swamps of Southeast Asia this species is highly popular among nano aquarium enthusiasts and planted tank keepers. Despite its very small size the Chili Rasbora adds striking color and constant movement to any well maintained aquarium.

Appearance and Coloration

Chili Rasboras have slender bodies with a deep red to bright cherry coloration when kept in good conditions. A thin dark stripe runs along the body from the head to the tail adding contrast to their vivid color. Males are usually brighter and slimmer while females appear slightly rounder especially when mature. Proper lighting dark substrate and live plants help bring out their best coloration.

Tank Size and Setup

Although extremely small Chili Rasboras do best in groups and benefit from stable water conditions. A minimum tank size of 5 to 10 gallons is recommended for a small school. Heavily planted aquariums with fine leaved plants mosses driftwood and leaf litter closely mimic their natural habitat. Gentle filtration and minimal water flow are important as they prefer calm environments.

Water Parameters

Chili Rasboras are sensitive to water quality and thrive in soft acidic water. Ideal temperature ranges from 72 to 80 degrees Fahrenheit. They prefer low hardness and a slightly acidic pH. Consistent water parameters and regular small water changes are essential for long term health and color development.

Diet and Feeding

Due to their tiny mouths Chili Rasboras require very small foods. They readily accept high quality micro pellets crushed flakes and powdered foods. Live and frozen foods such as baby brine shrimp microworms and daphnia are excellent for conditioning and color enhancement. Feed small amounts one to two times daily.

Temperament and Behavior

Chili Rasboras are extremely peaceful and shy. They feel most comfortable in groups of at least 8 to 10 individuals. When kept in larger schools they become more active confident and visible. They spend most of their time swimming in the middle areas of the tank and display gentle schooling behavior.

Tank Mates

Only very small peaceful tank mates should be considered. Suitable companions include other nano fish small shrimp and snails. They do especially well in species only tanks or shrimp focused aquariums. Avoid large or fast moving fish as they may intimidate or prey on them.

Breeding Information

Chili Rasboras can breed in well established planted tanks though breeding is often unintentional. Eggs are scattered among fine leaved plants or moss and adults do not guard them. Providing dense plant cover and gentle conditions increases the chance of fry survival. Fry are extremely small and require infusoria or powdered fry foods.

Conclusion

The Chili Rasbora is an excellent choice for aquarists who enjoy small peaceful fish and natural planted aquariums. Its brilliant red color delicate size and calm behavior make it a favorite for nano tanks. With proper care stable water and a gentle environment Chili Rasboras can thrive and create a beautiful living display in even the smallest aquariums.