Max Size: 2cm

Neon Green Rasbora (Microdevario kubotai)

Neon Green Rasboras have a peaceful disposition and are relatively hardy, making them wonderful members of the well-planted or nano aquarium. A large school of Neon Green Rasboras will fill the upper area of the aquarium with so much colour and activity that even non-hobbyists will appreciate the display.

It would be best to keep Neon Green Rasboras in groups of 8 to 10 individuals as they are a schooling species in the wild. Maintaining them in more significant numbers will make these fish less nervous and result in a natural, more effective looking display. In addition, males will also display their best colours as they compete with each other for female attention.

It would be best if you housed these Rasboras in either a species-only setup or alongside other small, peaceful fish such as small Tetras, Danios, small Rasbora species and Corydoras Catfish.

Neon Green Rasboras are not always suitable for the typical community aquarium because of their small size and slightly timid nature. However, if you have larger groups, plenty of coverage and peaceful tankmates, it could work and give them much more confidence.

The aquarium should be designed so that there are areas of dense planting, including shady bogwood pieces. These Rasboras would also appreciate the addition of some floating plants to help diffuse the light. The aquarium needs to have moderate water movement to encourage good oxygenation levels; however, the current should not be too harsh. The aquarium must be well established, and you will need to perform plenty of small partial water changes regularly.

Neon Green Rasboras have greyish-olive bodies with an iridescent greenish-yellow hue. In addition, they possess a prominent metallic yellowish-gold lateral stripe, and their dorsal and anal fins are translucent.

Tank Mates for the Neon Green Rasbora

2 ideal tank mate ideas for the Neon Green Rasbora include:

Celestial Pearl Danio(Danio margaritatus)
Staeck Endler(Poecilia wingei)
Quick Facts
Scientific NameMicrodevario kubotai
Other NamesYellow Neon Rasbora, Kubotas Microrasbora
OriginsMyanmar, Thailand
Aquarium LevelMiddle - Top
DifficultyBeginner - Intermediate
Best kept asGroups 8+
Lifespan3 - 7 years
Water Parameters
Water TypeFreshwater
PH5.5 - 7.5
GH4 - 8
TDS18 - 179
72 - 82℉
22.2 - 27.8℃

Photos of the Neon Green Rasbora

Neon Green Rasbora
Neon Green Rasbora


Neon Green Rasbora (Microdevario kubotai) Aquarium Fish Species Profile & Care Guide

Natural Habitat

Neon Green Rasboras occur in the Ataran River basin, a tributary within the Salween drainage in southern Myanmar as well as the Ranong and Phang Nga provinces on the northwestern slope of peninsular in Thailand in Southeast Asia. In addition, these Rasboras have also been recorded in the Suriya River basin in Thailand.

Neon Green Rasboras inhabit calm to moderately-flowing ranges of well-oxygenated headwaters and minor tributaries with clear water. Their habitats usually contain submerged driftwood, aquatic vegetation and roots of riparian vegetation and the substrate is typically made up of gravel, sand, rocks, stones, and patches of leaf litter.

What to feed the Neon Green Rasbora

Neon Green Rasboras are not particularly fussy about what they eat. They will readily accept good quality dried food such as flakes, pellets and granules. However, it would be best to include some frozen or live food into their diet; this can consist of brine shrimp, bloodworms, daphnia, and insect larvae. It would help if you remembered that these are very small fish with tiny mouths, so any food you provide must be of suitable size.

Neon Green Rasboras will also appreciate some blanched vegetables on occasion; lettuce, zucchini, or kale are all excellent choices.

How to sex the Neon Green Rasbora

It is somewhat straightforward to differentiate between male and female Neon Green Rasboras. Mature males will be more vibrantly coloured and more compact than females. In contrast, the females will typically be slightly larger and will take on a more gravid appearance when ready to reproduce.

How to breed the Neon Green Rasbora

In a densely planted aquarium with large groups of well-conditioned Neon Green Rasboras, spawnings should occur regularly, with eggs being scattered over the vegetation and the decor. The eggs and fry will be seen as food by the adults, but some should survive into adulthood if there is plenty of plant cover.

However, if you require a more significant number of fry, a more controlled approach will be required. You will need to set up a separate breeding tank with plenty of plants or spawning mops.

Once you have set up the breeding tank, you should then place a pair of well-conditioned adults into it. Once spawning has finished, usually, 2 or 3 days later, you should carefully remove the adults and put them back into their usual aquarium; otherwise, they will eat any eggs if given a chance.

The incubation period is temperature-dependent, but it typically takes around 72 hours, with the young becoming free-swimming 3 to 4 days later. You should first feed the fry on infusoria type foods moving on to baby brine shrimp, microworm or crushed flake food once the fry are large enough to accept them.

Other Rasboras of interest

Black Line Rasbora(Rasbora borapetensis)
Chilli Rasbora(Boraras Brigittae)
Clown Rasbora(Rasbora kalochroma)
Dwarf Rasbora(Boraras maculatus)
Emerald Eye Rasbora(Brevibora dorsiocellata)
Exclamation Point Rasbora(Boraras urophthalmoides)
View all Rasboras
Date Added: 16/07/2021 13:07:20 - Updated: 19/01/2022 14:17:53