Not furry, but we like them anyway.
Neon Green Rasbora
Microdevario kubotai
Also called Green neon rasbora, Yellow neon rasbora, Kubotai rasbora, Kubotai's microrasbora, Microrasbora kubotai (former name)
From Western Thailand (Ranong and Phang Nga provinces) and the Ataran River basin of Myanmar, in the Salween drainage12
At a glance the quick version
Looks how to spot one
Tiny, slender cyprinid with clear fins
A miniature fish with a see-through, slim body. In the wild it looks pale yellow and translucent, while aquarium fish glow lime to greenish yellow with a golden line along the side. The fins are clear. Males are slimmer and more intensely coloured, females are a little larger and deeper bodied.13
Personality what they are like
Gentle and slightly shy. It feels most secure and looks best in a sizeable group, where it moves about in loose, shimmering shoals.1
Daily activity how busy a day looks
An active little swimmer that likes well oxygenated water with light to moderate flow and open swimming space between plants.1
Grooming and care the hands-on bits
Small, frequent meals and stable water suit it. A planted, mature tank with regular partial water changes keeps it relaxed.1
Home where they are happiest
Clear, soft water at about 20 to 27 C, pH roughly 6.0 to 7.0 and hardness 1 to 10 dGH. A base of at least 60 x 30 cm (about 54 litres). Sand or gravel, leaf litter, wood and plants recreate its forest headwaters.1
Food basics what goes in the bowl
Likely feeds on tiny invertebrates and zooplankton in nature. Offer very small dry foods along with live or frozen Daphnia and baby brine shrimp.1
Company who they like around
A schooling fish found in the wild in groups of 20 to 50. Keep at least 8 to 10, ideally more, with other tiny peaceful fish.1
The story where it all began
Described by Kottelat and Witte in 1999 as Microrasbora kubotai, and moved to the genus Microdevario after a 2009 genetic study. It honours Katsuma Kubota, a fish collector and trader. It lives in clear forest headwaters of western Thailand and neighbouring Myanmar.132
Fun facts for the dinner table
- 1
Adults stay under about 2 cm long, making it one of the smallest cyprinid fishes.3
- 2
It looks pale and translucent in the wild but shows a strong lime green glow in aquariums.3
- 3
It is named after Katsuma Kubota, a fish collector and managing director of a fish trading company.3
- 4
Wild fish are usually seen in shoals of 20 to 50 individuals.1
Recognised by the official bits
- IUCN Red List
- Least Concern (assessed February 2011)3
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Neon Green Rasbora. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- FeedingSmall amounts once or twice a dayevery day
- Temperature checkevery day
- Water changeAbout 25% of the waterevery week
- Water testevery week
- Glass cleanevery week
- Filter rinseRinse in old tank water, never tap waterevery month
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Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.
- Microdevario kubotai, Seriously Fish seriouslyfish.comused for names, origin, habitat, size, water parameters, tank size, diet, behaviour, history
- Microdevario kubotai, Wikipedia en.wikipedia.orgused for names, size, origin, description year
- Microdevario kubotai, FishBase fishbase.seused for max length, IUCN status, colour, name origin
Checked 2026-09-30. Text is written in our own words from these sources.