Kubotai Rasbora

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About Kubotai Rasbora

The Kubotai Rasbora is a tiny and vibrant freshwater schooling fish known for its bright fluorescent yellow-green body and slender shape. Its vivid colouration looks particularly impressive against dark substrate and lush green plants.

Kubotai Rasboras are peaceful, active schooling fish that thrive when kept in groups. A larger group allows them to display more natural behaviour and gives them confidence within the aquarium.

They are excellent inhabitants for planted and nano community aquariums. They appreciate gentle to moderate water flow, plenty of plants and open swimming areas.

Their small size means they should only be housed with similarly sized peaceful tank mates. Larger fish may view them as prey.

They are omnivorous and readily accept appropriately sized foods such as micro pellets, crushed flakes, baby brine shrimp, daphnia and other small frozen or live foods.

Quick Care Guide

Scientific Name: Microdevario kubotai
Common Name: Kubotai Rasbora / Neon Green Rasbora
Family: Danionidae
Type: Freshwater Fish / Rasbora
Adult Size: Approximately 2–3 cm
Temperament: Peaceful
Care Level: Easy
Minimum Aquarium: 40 L+
Temperature: 22–28°C
pH: 6.0–7.5
Water Hardness: Soft to Moderately Hard
Diet: Omnivore
Tank Level: Midwater
Suitable For: Nano aquariums, planted tanks and peaceful community aquariums

Frequently Asked Questions

Are Kubotai Rasboras peaceful?

Yes. They are peaceful schooling fish and are excellent additions to community aquariums with other small, non-aggressive species.

How many Kubotai Rasboras should I keep?

They should ideally be kept in a group of at least 6, with larger groups producing more confident and natural schooling behaviour.

How big do Kubotai Rasboras get?

They remain very small, reaching only around 2–3 cm as adults.

What do Kubotai Rasboras eat?

They readily accept micro pellets, crushed flakes, baby brine shrimp, daphnia and other appropriately sized frozen or live foods.

Are Kubotai Rasboras good for planted aquariums?

Yes. They are excellent planted-tank fish and their bright green-yellow colouration contrasts beautifully against dense green vegetation.

Common Mistakes

Keeping only one or two fish
Kubotai Rasboras are schooling fish and should be kept in a proper group.

Keeping them with large fish
Their tiny size makes them vulnerable to predation.

Feeding food that is too large
Their small mouths require appropriately sized micro foods.

Using excessive water flow
They appreciate gentle to moderate circulation rather than extremely strong flow.

Keeping them in an empty aquarium
Plants, wood and other structures provide cover and help them feel secure.