Kubotai Rasbora (Microdevario kubotai): Species Profile

The Kubotai Rasbora, also known as the Neon Green Rasbora, is a small freshwater fish celebrated for its vibrant green coloration and peaceful demeanor. Originating from the rivers and streams of Southeast Asia, particularly in Thailand and Myanmar, this species is a popular choice among aquarists seeking to add a splash of color to their community tanks.

Species Overview

• Common Names: Kubotai Rasbora, Neon Green Rasbora, Green Rasbora
• Scientific Name: Microdevario kubotai
• Adult Size: Approximately 0.8 inches (2 cm)
• Lifespan: 3 to 7 years

Appearance

Kubotai Rasboras exhibit a striking neon green body with a translucent quality, allowing light to enhance their vibrant hue. Their small size and shimmering appearance make them a captivating addition to planted aquariums.

Behavior and Temperament

These rasboras are peaceful, schooling fish that thrive in groups of eight or more. They are active swimmers, often occupying the middle regions of the aquarium. Their calm nature makes them excellent companions in community tanks with other non-aggressive species.

Tank Requirements

• Tank Size: A minimum of 15 gallons is recommended to accommodate a small school and provide ample swimming space.
• Water Parameters:
  • Temperature: 68–80.6°F (20–27°C)
  • pH: 6.0 to 7.0
  • Hardness: Soft to moderately hard water
• Substrate: Dark substrates enhance their coloration and mimic their natural habitat.
• Decor: Incorporate live plants, driftwood, and rocks to offer hiding spots and create a natural environment.

Diet

Kubotai Rasboras are omnivorous and accept a variety of foods:

• High-quality flake or micro-pellet food
• Live or frozen foods such as brine shrimp, daphnia, and bloodworms
• Occasional vegetable matter like blanched spinach or zucchini

Feeding them a varied diet enhances their coloration and overall health.

Tank Mates

Due to their peaceful nature, Kubotai Rasboras coexist well with:

• Other small rasboras
• Tetras
• Corydoras catfish
• Dwarf gouramis
• Small livebearers like guppies and platies

Avoid housing them with larger, aggressive fish that may view them as prey.

Breeding

Breeding Kubotai Rasboras in captivity is achievable with proper conditions:

• Breeding Tank: Set up a separate tank with soft, slightly acidic water and a temperature around 75°F (24°C).
• Spawning: Introduce a conditioned pair; the female will scatter eggs among fine-leaved plants or spawning mops.
• Post-Spawning: Remove adults to prevent egg predation. Eggs typically hatch within 24–36 hours, and fry become free-swimming shortly after.
• Feeding Fry: Start with infusoria or commercially prepared fry food, transitioning to finely crushed flake food as they grow.

Health and Disease

Maintaining optimal water quality is crucial to prevent common freshwater diseases. Regular water changes, a balanced diet, and avoiding overcrowding help ensure their well-being. Always quarantine new fish before introducing them to the main tank to prevent disease transmission.

By providing appropriate care and a suitable environment, Kubotai Rasboras can be a vibrant and engaging addition to any freshwater aquarium.