Emerald Dwarf Rasbora: The Complete Care Guide.

Have you heard about the Emerald Dwarf Rasbora and wondered what it is exactly? If yes, then trust me, you are not alone. When I learned about the Emerald Dwarf Rasbora, I was intrigued to learn more, so I conducted my research and found out all that there was to learn about these magnificent creatures.

And thus, I complied all my research to create Emerald Dwarf Rasbora – The Complete Care Guide. This guide will brief you about all that you need to know about Emerald Dwarf Rasbora. Take a look.

What is Emerald Dwarf Rasbora?

Emerald Dwarf Rasboras are little fish with a lot of personalities! They usually have a lovely coral pink or sun-kissed orange coloring, but it’s the startling turquoise-green stripes along their sides that truly set them apart.

They sparkle beautifully in any light (these stripes may appear more purple in color on some fish). A black mark can also be found near the base of their caudal fin.

Emerald Dwarf Rasbora

Males have red or orange fins and are a little smaller than females, while females have transparent fins and are a little less colorful than their male counterparts. They’re ideal for nano tanks because of their small size.

Dwarf Emerald Rasboras are very easy to care for as long as they are kept in water with consistent conditions and excellent quality.

These fish are calm and flourish in groups; yet, the males frequently dance and spar with one another because they are shoaling rather than schooling fish. The larger the number of these fish in your aquarium, the less shy they will be.

When these fish are healthy and placed in a well-cycled, densely planted aquarium, they are likely to reproduce, and you may notice fry beginning to develop.

Like other rasboras and danios, they are relatively peaceful and are entirely safe to maintain with other fish (as long as the other fish are quiet as well! ), snails, shrimp, and live plants.

Plants, rocks, or driftwood give protection for them. Therefore they do best in tanks containing these elements.

Emerald Dwarf Rasboras are reported to prefer live feeds like brine shrimp, micro worms, daphnia, and insect larvae over fish flakes or pellets. Prepared meals like frozen brine shrimp and bloodworms may also be acceptable.

Our Emerald Dwarf Rasboras are tank-raised, and we ship them out as adolescents or young adults, around a half-inch long, with the potential to grow to 34 inches long.

Emerald Dwarf Danios, Thick Band Purple Zebra Danios, and Cross-banded Dwarf Rasboras are some of the other names for this fish.

Adult Pygmy Rasboras have a thin physique and are short in stature. These freshwater fish appear too appealing and unique with their reddish body color and circular black and dark brown patches on their flanks.

Pygmy Rasbora, on the other hand, has a wide range of color patterns depending on their origins. Some of them have a brighter shade of red. Males are generally cherry red and orange in color. The female adult-size fish, on the other hand, is reddish in hue.

Average Emerald Dwarf Rasbora Size

The typical length of an adult Emerald Dwarf Rasbora is between 1 and 1.5 inches. Because these fish aren’t particularly large, they’re ideal for micro aquariums. When you buy them when they’re young, they’ll probably only be around half an inch long!

Emerald Dwarf Rasbora Care Guide

These freshwater fish develop at a consistent rate and reach their maximum length quickly. Males are often smaller than females as adults. Their tiny size, however, makes distinguishing between them difficult.


For a little fish, this fish has a lengthy lifetime, ranging from three to five years. Naturally, the greater care you provide your fish, the longer its life expectancy may be.

Keeping your aquarium water clean is one of the most essential things you can do to help this fish have a long and healthy life.

Temperament & Behavior

The Emerald Dwarf Rasbora is a calm species that gets along with most other fish. They, on the other hand, prefer to associate with people of their own species. They’re gregarious and thrive in huge groups.

Emerald Dwarf Rasboras are a species that shoals. This implies that the fish may sometimes form groups and swim together, but they will also wander off and do their own thing.

Emerald Dwarf Danio Temperament and Behavior

The Emerald Dwarf Rasbora is a real schooling fish, yet it is not a true schooling fish. You shouldn’t anticipate waves of these little fish to move over your aquarium.

Dwarf Emerald Rasboras are lively and curious. They will be swarming about the tank, looking into every nook and crevice. Because the fish aren’t genuine schoolers, they’re more likely to be found in a loose cluster.

Danio erythromicron | Tropical Fish Keeping

These danios may be skittish as well and will flee if someone approaches the tank unexpectedly. Males can get into disputes on occasion. To create a hierarchy, they would chase and nip one other.

On the plus side, keeping them in a large group can help to reduce aggressiveness. However, you may need to purchase as many of these danios as possible, preferably 15 or more.

Incorrect water parameters, deteriorating water quality, overpopulation, or a lack of females can all make male danios irritable. In-fighting, thankfully, does not result in serious injury.

These danios have a calm demeanor. However, without a school’s security, it should come as no surprise that kids are wary and hesitant with others.

Emerald Dwarf Rasboras will take some time to get along with other calm-natured species and feel at ease with them. These danios prefer to stay with their own kind till that time comes.

How To Setup Tank For Emerald Dwarf Rasbora?

Lake Inle is the optimal tank arrangement for Emerald Dwarf Rasboras. Your fish’s health and well-being are ensured by simulating their natural environment. However, you must run a newly built-up tank for at least three days before adding them.

Tank Dimensions

“How many Dwarf Rasboras can I fit in a 10-gallon tank?” is a common question. At the absolute least, you can keep a shoal of 15 to 20 fish and still have enough area for everyone to have fun.

Upgrade to a 20-gallon tank to accommodate additional danios and let you be more creative with your arrangement. If you want to add a few more danios species and construct your own little Lake Inle, you’ll need a much larger tank.

If you’re new to fishkeeping, a 25-gallon aquarium is an excellent place to start. For the novice, maintaining a nano tank might be difficult. When there is less water, the water quality can change quickly.


For your planted tank, we recommend dark aqua soil. The soil’s organic breakdown releases carbon dioxide, which feeds the plants and fosters bacteria colonization, which helps to keep the tank environment stable.

As a consequence, it has a better success rate when it comes to growing plants that would ordinarily require CO2 infusions.

Furthermore, a soil-based substrate has a minimalist appearance, allowing the color of your fish and plants to stand out. At the same time, it mimics Lake Inle’s loam substrate.

Decorations and plants

Fill the tank with a variety of plants that take up at least half of the area. When they reside in a verdant forest, Emerald Dwarf Rasboras are ecstatic. Living in a tank with few decorations can worsen their nervousness and put them under continual stress.

Emerald Dwarf Rasbora • Care Guide (Setup, Diet & Breeding)

It’s also an encouragement for algae to flourish. On the other hand, beginners should select “simple” plants that will thrive in low-CO2 environments.

If you like, you may also use ceramic decorations and slate constructions. When it comes to adding driftwood, be cautious. Natural driftwood may emit tannins that color the water, which these fish might not be able to handle.


Small tanks are simple to put up, but they are more challenging to maintain than more giant tanks. Certain requirements of a tank are – 


Aquatic plants will help to keep your tank healthy, but external filtration will give you the greatest results. For nano tanks, a hang-on-back system is a common choice; it takes up little space and provides mechanical, biological, and chemical filtration.

Lights are another crucial factor to consider when designing a planted tank. It not only promotes plant development but also brightens the appearance of your fish.

Invest in an aquarium water testing kit and maintain track of these factors at all times. If you want to give the best care for your fish, you need to stay up to speed on the current status of your aquarium.

Emerald Dwarf Rasbora Breeding

Emerald Dwarf Rasboras are quick to reproduce. In ideal conditions, these fish will often reproduce without the need for human assistance. They are egg-scatterers, but they show no signs of parental impulses (which makes things a lot easier).

Emerald Dwarf Rasbora

It’s essential to breed young fish in a controlled setting if you want to increase their chances of survival. Make a separate breeding tank with well-circulated water. Adding spawning mops or leafy plants is a good idea. Add a bonded pair after that.

A group of two males and many females can also be added. It’s worth mentioning that as the number of individual fish grows, the chances of eggs being eaten grow. At this stage, high-protein meals should be available.

Spawning should take place quite shortly. Around 30 eggs will be laid by females around the tank. Because the eggs are somewhat sticky, they may attach to foliage or other decorations.

It takes roughly 72 hours for eggs to hatch. Before becoming free-swimming, the fish fry will survive for another three to four days on the egg sac. Until they’re ready for baby brine shrimp, you may feed them infusoria or powdered fish food.

Emerald Dwarf Rasbora Tank Mates

Apart from fish of the same species, Emerald Dwarf Rasboras get along with a wide range of friendly freshwater species (and plenty of other types of rasboras ).

You won’t have to worry about the Emerald Dwarf Rasboras attacking you, but you will have to worry about them becoming food for someone else. It’s crucial to stay away from any vast or potentially violent fish! This species thrives in groups of fish of similar size.

You might also look for tank mates from the same area. In the fish trade, there are numerous additional species endemic to Lake Inle. For the Emerald Dwarf Rasbora, here are some suitable tank mates:

  • Red Dwarf Rasbora
  • Cherry Shrimp
  • Small Types Of Catfish
  • Most Freshwater Snails
  • Celestial Pearl Danio
  • Dario Hysginon
  • Sawbwa Barb
  • Glowlight Danio

What Does Emerald Dwarf Rasboras Eat?

Dwarf Emerald Rasboras eat anything. Most commercial flake or pellet meals will be accepted. These fish are also algae-eating passives. The primary source of sustenance should be dry meals.

For optimal health, choose nutritionally balanced foods. Color solutions that assist bring out the inherent brilliance of these fish are also available (be careful when researching these brands, though).

Dwarf Emerald Rasboras are finicky creatures. While they will eat dry food, high-protein snacks are typically preferred. As a result, it’s a good idea to give them some every now and again.

It will enrich their lives while also assisting them in maintaining their health! Live or freeze-dried meals can be fed to them. Daphnia, bloodworms, and newborn brine shrimp are other meals to try.

Dwarf Emerald Rasboras are omnivorous, and in the wild, they are opportunistic eaters. They will eat dried meals like flakes or pellets in captivity. They’ll consume freeze-dried daphnia, bloodworms, brine shrimp, and tubifex, among other things.

They prefer a primarily protein-rich diet in the wild and will consume a lot of insects. They’ll consume anything that comes their way, including algae, zooplankton, and plant materials.

Aquarium Care for Emerald Dwarf Rasbora

Buy Rasbora Fish in Ahmedabad, Gujarat | AquaStudio Ahmedabad

The optima aquarium care is to keep a note of the water temperature that it should be between 72 and 74 degrees Fahrenheit, and the pH should be between 7.0 and 7.8.

If you want to keep your Emerald Dwarf Rasboras in a room with a temperature below 75 degrees Fahrenheit, make sure you have a heater for their tank because they are sensitive to water fluctuations.


Consider the Emerald Dwarf Rasbora if you want to add color and vitality to your aquarium. These small fish, scientifically known as Celestichthys erythromycin, have enormous personalities. These freshwater fish are exceedingly active and interested in a well-decorated habitat. They have frequently seen sparring or playing with others.

The Emerald Dwarf Rasbora is only found in Myanmar’s Lake Inle. This clean, shallow lake is fast-changing, posing a threat to native animals. Fortunately, this species is eager to reproduce, resulting in the robust aquarium trade. These fish are fantastic additions to both large and small tanks due to their modest size and lovely color.


How many rasboras are in a gallon?

You must house them appropriately and in the appropriate tank size, as with any aquarium fish. So, how many Rasboras can you fit in a 5-gallon, 10-gallon, or 20-gallon tank? In theory, one Rasbora requires 4-5 gallons of space. Therefore one fish may fit in a 5-gallon tank.

How many dwarf Rasboras should be kept together?

Dwarf Rasbora is a schooling species that thrive in groups of ten or more. A school of them may be kept in a tank as little as five gallons. The temperature and quality of the water are extremely important to this species.

Are Emerald Rasboras aggressive?

Apart from fish of the same species, Emerald Dwarf Rasboras get along with a wide range of friendly freshwater species (and plenty of other types of rasboras). You won’t have to worry about the Emerald Dwarf Rasboras attacking you, but you will have to worry about them becoming food for someone else.

Will dwarf Rasboras eat shrimp?

They won’t be able to devour the shrimp as they grow more prominent, but the population won’t last indefinitely.

About the author

I'm Gulshan, a passionate pet enthusiast. Dive into my world where I share tips, stories, and snapshots of my animal adventures. Here, pets are more than just animals; they're heartbeats that enrich our lives. Join our journey!