
Source: Wikimedia Commons
Microdevario kubotai
A tiny cyprinid about 2cm long, greenish yellow with a glowing golden stripe along the flank. Native to Thailand, it shows that fluorescent line best when shoaled in a planted tank, and its clear fins keep the whole fish looking bright.
Microdevario kubotai is a tiny cyprinid from Thailand. FishBase records a maximum of 1.9cm SL, 29 vertebrae and 24-25 longitudinal scales, and describes it as translucent yellow in the field and greenish yellow in the aquarium, with a glowing golden lateral stripe, belly, eye and opercle and hyaline fins. Seriously Fish gives 2cm SL, 20-27C, pH 6.0-7.0, 1-10 dGH and a 60 x 30cm base. It is separated from its congeners by the clear dorsal and anal fins and nine or ten branched anal rays. Extremely peaceful, it belongs with equally small fish that share its water preferences, and other Thai species such as Boraras micros, Trigonostigma espei and Pangio are recommended. It has been bred in aquaria, scattering its eggs among vegetation with no parental care. The IUCN rates it Least Concern and it is not covered by CITES.
Source: Wikipedia (CC BY-SA 4.0)
The Kubotai Rasbora lives 3-5 years.
The Kubotai Rasbora grows to Up to 1.9cm SL.
The ideal temperature for the Kubotai Rasbora is 20〜27℃.
Origin
Thailand
Lifespan
3-5 years
Size
Sources: FishBase / Seriously Fish
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Microdevario kubotai (Kottelat & Witte, 1999)
Synonyms: Microrasbora kubotai
Authority databases: FishBase
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
Up to 1.9cm SL
Temperature
20〜27℃
Fine dried foods and live or frozen Artemia nauplii and daphnia
Seriously Fish suggests a 60 x 30cm base. It shows well in a densely planted tank and settles under floating plants that soften the light. Because it is so small, fit a sponge over the filter intake.
Seriously Fish gives 20-27C, pH 6.0-7.0 and 1-10 dGH; FishBase publishes no temperature or pH for the species. Soft, slightly acidic water is the baseline, and small tanks need frequent partial changes.
Extremely peaceful but very small, so keep it only with fish of similar size and water preferences. Boraras micros, Boraras naevus, Trigonostigma heteromorpha, T. espei and Pangio species are recommended.
Its mouth is very small, so use the finest dried foods. Live or frozen Artemia nauplii and daphnia improve colour and breeding condition. Feed small amounts several times a day.
It has been bred in aquaria, scattering eggs among vegetation with no parental care. In good condition it spawns often, and in a mature, densely planted tank some fry may survive unaided.
Groups of eight to ten or more settle it and bring out colour. It is sold under several trade names, so check the scientific name when buying. It reacts badly to sudden changes, so acclimatise slowly. The IUCN rates it Least Concern.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Kubotai Rasbora is 20〜27℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Kubotai Rasbora is 3-5 years. With proper care and nutrition, they can live a long and healthy life.
Kubotai Rasbora typically reaches Up to 1.9cm SL as an adult. Size may vary depending on care conditions and individual genetics.
Kubotai Rasbora feeds on: Fine dried foods and live or frozen Artemia nauplii and daphnia. Aim for a balanced diet with appropriate feeding frequency.
The price of Kubotai Rasbora varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026