To protect our animals and to ensure they get to our customers healthy, we will only ship orders with Nano Fish via UPS Next Day Air.

If you are looking for a lively nano fish with personality and dazzling colors, look no further than the Emerald Dwarf Rasboras (Celestichthys erythromicron). While the fish we offer are tank-bred, they originate from Lake Inle in Burma.

These colorful fish have shining, turquoise-green striations that run along the sides of their bodies. These stripes are particularly eye-catching under bright lighting conditions. They don’t grow larger than 1-1.5”, with males being slightly smaller than their female counterparts. Males have red & orange fins, while females tend to have clear, translucent fins. 

In terms of care, Emerald Dwarf Rasboras are relatively easy to care for; they can thrive so long as water parameters are stable and water quality is high. In terms of numbers, as shoaling fish, they do prefer being kept in small groups. One will observe dancing and sparring behavior amongst males, so the more individuals kept in a tank, the less chances of fighting will occur. Similar to other danios, they are very peaceful and can be kept with the vast majority of other peaceful nano fish and invertebrates. They will appreciate having plant cover, in addition to wood and rocks, to offer solace if need be. 

Spawning Emerald Dwarf Rasboras requires high-quality water and stable parameters. As egg layers, females distribute eggs amongst vegetation, which are subsequently spawned by males. Offering hiding places with plants and other aquarium hardscaping will ensure an increased likelihood of fry survival.

Emerald Dwarf Rasboras can be fed prepared fish foods such as fish flakes or pellets/tablets, but they have been known to show a preference towards small live foods and frozen foods such as baby brine shrimp, daphnia, bloodworms, and tubifex worms.

Dwarf Emerald Rasbora are pretty easy to care for as long as they are introduced to a mature, cycled tank. They can acclimate to a wide range of parameters. The following are the water parameters we keep at:

Our Tank Water Parameters

PH: 7.2 to 7.5
GH: 7 to 8
KH: 3 to 4
TDS: 180 to 250
Temp: 72 to 75

We feed them a mix of frozen brine shrimp, frozen daphnia and high-quality flake food.