Easy to moderate
Emerald Dwarf Danio (Danio erythromicron)
20–24°C · pH 7–8 · 45L
£5.99
Tiny peaceful shoaling rasbora for mature planted aquariums, with bright yellow-green colour, UK live-fish courier delivery and Live Arrival Guarantee.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Microdevario kubotai
Neon Green Rasbora are a shoaling species — they need 6+ to feel safe and show their full colour.
Tiny peaceful shoaling rasbora for mature planted aquariums, with bright yellow-green colour, UK live-fish courier delivery and Live Arrival Guarantee.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Maintain these water conditions for optimal health and vibrant colors
The Neon Green Rasbora, Microdevario kubotai, is a tiny, bright shoaling fish for mature planted aquariums. It is still sometimes sold under the older name Microrasbora kubotai, so both names may appear in the trade, but Microdevario kubotai is the current name to use for care and identification.
This species is loved for its clean yellow-green flash, peaceful behaviour and constant midwater movement. A proper group looks best against dark wood, mosses and fine-leaved plants, where the fish feel secure enough to stay out in the open.
Microdevario kubotai is a freshwater danionin from Thailand, with records from peninsular Thailand and the Ataran River basin in the Salween drainage. In nature it is associated with clear, moving water and small stream habitats, which is why it does best in clean, stable aquariums rather than newly set up tanks.
These rasboras are peaceful but naturally alert. They should not be kept singly or in pairs. In a proper shoal they move as a loose group, feed more confidently and display the glowing lateral colour that makes the species so popular in aquascaped tanks.
Choose a mature aquarium with gentle to moderate flow, reliable filtration and plenty of plant cover. A dark substrate, driftwood and attached plants such as Anubias, Microsorum or mosses help the green body colour stand out while giving the shoal places to retreat.
Although the fish is very small, stable water matters more than squeezing it into the smallest possible tank. A 60 x 30 cm footprint gives the group room to move and keeps water chemistry steadier. Avoid adding Neon Green Rasboras to a brand-new aquarium; they are tiny fish and settle best once the filter and microfauna are established.
Offer foods small enough for their mouths. Fine micro pellets and crushed quality flake work well as the staple, with small frozen or live foods such as daphnia, Cyclops and baby brine shrimp used to improve condition and colour. Feed tiny portions once or twice a day and avoid letting food sink and spoil in nano aquariums.
Keep Neon Green Rasboras with other calm, small fish that enjoy similar conditions. Good choices include Emerald Dwarf Danios, Celestial Pearl Danios, small rasboras and peaceful shrimp in planted layouts. In larger community tanks, Black Harlequin Rasboras and Harlequin Gold Rasboras can give a stronger contrast.
Avoid large fish, boisterous barbs, predatory cichlids and anything likely to outcompete them at feeding time. Adult shrimp are usually suitable, but very tiny shrimplets may still be eaten by most small fish.
Order Neon Green Rasboras from Tropical Fish Co for UK delivery by licensed live-animal courier. We pack live fish with insulation and seasonal temperature protection, and dispatch only when the weather and route are suitable.
First-time customers can use WELCOME10 for 10% off their first order. This live fish is covered by our Live Arrival Guarantee when the delivery instructions are followed.
Keep at least 8, and choose a larger group where the tank size allows. A shoal is calmer, more colourful and more natural than a small group.
They are suitable for careful beginners with a mature, stable aquarium. They are not a good choice for an uncycled first tank.
Yes, they usually work well with adult dwarf shrimp in planted tanks. Like most small fish, they may eat the smallest shrimplets if they can catch them.
Keep them between 20 and 27°C, with stable water and regular maintenance more important than chasing a single exact number.
Microrasbora kubotai is the older synonym still used in parts of the aquarium trade. The current name is Microdevario kubotai.
20–24°C · pH 7–8 · 45L
20–24°C · pH 6.5–7.5 · 45L
22–26°C · pH 5–7 · 60L
23–28°C · pH 6–7.5 · 60L
18–26°C · pH 6.5–8 · 30L
23–27°C · pH 7.4–8.4 · 500L
23–27°C · pH 7.4–8.4 · 150L
24–28°C · pH 6.5–7.8 · 300L
24–28°C · pH 7–8 · 120L
18–28°C · pH 6.5–8 · 20L
24–27°C · pH 7.5–8.8 · 150L
22–26°C · pH 6–7.5 · 60L
24–28°C · pH 7.5–8.5 · 40L
24–28°C · pH 7.5–8.5 · 500L
28–30°C · pH 5.5–7.5 · 300L
22–26°C · pH 6–7.5 · 150L
