Species description

Care, breeding and tankmates

Fish profile

Temperament

Peaceful

They have a very peaceful, lively, and somewhat timid temperament. They rely completely on the safety of their school and will become extremely stressed, pale, and prone to disease if kept in too small a group. Their energetic schooling behavior adds wonderful movement and a splash of bright color to a nano tank.

Diet

Omnivore

They are micro-predators that feed on tiny invertebrates and zooplankton in the wild. In the aquarium, they readily accept crushed high-quality flakes and micro-pellets. Supplementing their diet with small live or frozen foods like baby brine shrimp and daphnia will greatly enhance their vibrant green coloration.

Sex ratio

School

Sex ratio is generally unimportant for the day-to-day well-being of the school, but maintaining a larger group is crucial. They must be kept in schools of at least 8 to 10 individuals to feel secure and display their best colors. Males are typically more slender and more intensely colored than females.

Feeding frequency

TWO_THREE_DAILY

Due to their small stomachs and active swimming habits, they benefit from being fed small amounts two to three times daily. Providing multiple small feedings ensures they receive enough calories without causing food waste to rot in the tank. Only offer what they can completely consume in about a minute.

Bioload

Low

The Neon Green Rasbora is a very small nano fish with an exceptionally low bioload. They produce minimal waste, making them perfect candidates for small, heavily planted aquariums. Even so, maintaining excellent water quality through regular maintenance is critical as they are sensitive to parameter fluctuations.

Flow

Strong

They hail from slow to moderately flowing rivers and streams in Southeast Asia. Providing a gentle to moderate water flow will encourage their natural schooling behavior and keep them active. Extremely strong currents should be avoided as it will quickly exhaust these tiny fish.

Jump risk

No

Reproduction

Oviparous

They are continuous egg scatterers that provide no parental care whatsoever to their offspring. Breeding in a dedicated setup involves providing soft, slightly acidic water and dense vegetation like java moss. The parents will eagerly consume their own eggs, so they must be removed once spawning has occurred.

Compatibility & tankmates

Community

They are extraordinarily peaceful and make excellent tank mates for other tiny, non-aggressive species. Suitable companions include small tetras, pygmy corydoras, and most freshwater shrimp like Neocaridina. They should never be housed with larger or boisterous fish that may easily view them as a snack or stress them out.

Tank level

Middle

They are highly active fish that predominantly occupy the middle and upper regions of the water column. They will actively school and explore all open areas of the tank while darting into plants for cover when needed. Providing adequate swimming space alongside dense planting is the ideal setup.