Celestial Pearl Danio (Galaxy Rasbora) – Ultimate Care Guide

Last updated on December 24th, 2022 at 11:06 am

If you are looking for an unusual small fish to add to your freshwater aquarium, you should consider Celestial Pearl Danio. 

These beautiful fish were discovered in 2006 when a community in HopongMyanmar, lived in a small area. The wonderful colors of the fish and the atmosphere immediately calm down. This has made it a hit with enthusiasts, especially fish farming enthusiasts.

But what to feed celestial pearl danios, how long do danios lay eggs, and how to differentiate between males and female celestial pearl danio? If you want to breed from your stock, you need to know this.

We explain those subjects in this comprehensive guide to Celestial Pearl Care.

Celestial Pearl Danio (Galaxy Rasbora)

Fundamental Knowledge

Celestichthys Margaritatus is quite an interesting species. But before you buy one for your aquarium, it is important to know a few basics about whether it is suitable for your aquarium. Adding a fish to an aquarium takes planning and research. So take a look below and use the information to make an informed decision.

The fascinating thing about the Celestial Pearl Danio is that they are only found in a small part of a lake. This doesn’t necessarily mean they can’t swim in water elsewhere. Their natural habitat is a small part of a lake in Southeast Asia. As a recent discovery, there is something almost mythical about Sky Pearl (Rasboras Galaxy).

Important Note: Celestial Pearl Danio fish first discovered in 2006. Although they belonged to the genus Microrasbora. A study conducted two years later in 2008 found that the Rasbora galaxy was not Microrasbora galaxy but belonged to more like Danio. 

Celestial Pearl Danio is a species of fish full of surprises. There is probably a lot more to discover when it comes to this sparkling freshwater fish. An intriguing anecdote about heavenly pearl danios is how the rumor circulates that fish had become insanely rare.

It started about six months after this species discovered. People in the aquarium industry and aquarium enthusiasts believed that a pearling sky is easy to find.

Regular aquarium enthusiasts are struggling to breed fish (more on that below). Still, the wild Heavenly Pearl tangos have never threatened, and the population has not significantly reduced.

Danio Galaxy Appearance

Danio Galaxy Appearance

Without any doubt, it was the look of the pearl celestials that caught the attention of aquarium enthusiasts. They have a very distinctive look. The fins tend to be red or orange, some are more intense than others, and two black bands run parallel along each fin. 

Male fish in the Rasbora Galaxy tend to have lighter, reddish fins than females. You can only tell the gender of the fish by looking at them.

Important Note: The color of the male Sky Pearl Danio Fish is also bluer than the female’s greener shade. Due to the transparency of the gill covers, the transparent red gills can also be seen.

When you look at the pictures of this species, it is easy to be fooled into thinking that they are bigger than its pics. Many people were surprised at its small size when they saw it swimming in the water. The body is generally no larger than 1 inch. A small-looking fish has the formidable ability to make a big impression.


The Celestial Pearl Danio is calm and peaceful. They can be a real pleasure to bathe among the aquatic plants. Danio needs something to eat, a place to hide, and a few friends to thrive well in most circumstances.

The key is to keep in account the natural conditions in a very small area where they are found in the wild and repeat them in the tank if possible. These are great tank fish for someone looking for a species that looks beautiful (these fins are one of a kind). These fishes don’t require much and are laid back and peaceful in nature.

Tank conditions


Not only is it important which tankmates you should worry about or how much male fish you have in an aquarium. You need to see the big picture and make sure the aquarium is fit and right for you—this specific species. The temperature should be maintained around 73-79 ° F for Mimi.

C the natural conditions that a celestial danio pearl lives in, and another thing to keep in mind is that the water’s hardness should be at most soft or medium, with a PH of 6.5 and 7.5 PH. 

These are fairly common aquarium water conditions, and the way to interpret it is that one of these bright red danio fish is not that difficult to care for in terms of tank conditions.

Danios like to hide, so the aquarium should have lots of good plants for critical water conditions. This is especially mandatory if you have several male fish. 

Other than plants, it is to have at least 10 gallons of water, but also, if you have a lot of these peaceful little fish in your aquarium (whether male or female), you will need to adjust that in order. And possibly use a larger aquarium with more water. 

Celestial Pearl Danio Care Guide

However, you will soon start to notice that fish, although they are of the same species, will have personalities, and some may be more daring than others, which could be a bit shyer. 

It can be a problem when eating, a little problem if you know how to deal with it, but it’s always worth knowing. If some of your fish are pure, they will always risk not reaching food on time and, therefore, not getting the nutrition needed for these little aquarium inhabitants. 

The easiest way for galaxy rasbora care without wasting too much time is to feed the fastest danios on one side of the tank and the slower simultaneously. But on the other side, this will ensure that everyone gets their daily food.

The celestial danio bead may be small, but it’s made in its way! Many do not like to be treated with the same food every day, so if you are crawling, it is a possibility, try to feed your little fish a more varied diet where you change it from time to time to avoid boredom. 

And lack of interest. On your fish. This is true for many types of fish, but a danio appears to thrive in an environment where it can differentiate itself in terms of food.

Celestial Pearl Danio Diet and Feeding

In the natural environment, this species feeds on many types of algae, plants, and zooplankton. They are also known to feed on small crustaceans and worms. These fish tend to be opportunistic trays, which is why the diet is so beneficial.

However, in an aquarium, this species will eat dry food, such as flakes and pellets, as long as it is small enough to fit in their mouth.

Feeding can be a problem if they are too scared to eat it. This species will most likely continue moving towards the bottom of the tank to use sinking pellets.

Another option is to feed it with small, live, or frozen foods, such as pickled shrimp or krill. Live daphnia, Grindal worms, and Moine are excellent food for these fish and help enrich their diet.

Always remember that this is the cycle of the food they eat. This will allow them to stay healthy and strong as long as they eat the right types of food.

General Tips:

For any tank and any fish, watch the tank as you feed them and examine every fish’s behavior while feeding. In addition, you’ll study a lot about individuals that can lead you to provide them greater efficiency.

Some are going to be shy, and a few may be braver no matter the species. So knowing your fish is essential so you can feed to their wishes hence. It is vital to preserving an eye at the fish you’ve got in your tank to ensure they may not be getting outcompeted for food. If this occurs, do not forget to change the way you are feeding your fish.

Celestial Pearl Danio Lifespan

Celestial Pearl Danios that are tank-inhibiting survive for 3-5 years on average. Therefore, the less stress a fish is subjected to, the longer it will be able to live and prosper in your tank. That involves giving a constant feed and stable water conditions, as well as whatever else the fish requires, such as lots of hiding areas, appropriate lighting, and so on.

Suitable Tankmates

The celestial pearl danio does well with other galaxy rasbora tank mates of the same species, so make sure you have around five or six, as long as the tank size allows. 

celestial pearl

Male fish can be kept together, but you need to be careful not to have too many of them unless you have enough room in the tank with plenty of hiding places. Favorable tank mates are:

Important Note: The male pearl danio can get a bit territorial, but the way to make sure that doesn’t become a problem is to provide a tank with enough hiding places for everyone.

One thing you should know is that celestial pearl danio can be a threat to your young brine shrimp. You should keep brine shrimp in your aquarium as they are known to kill and eat them. 

However, this only applies to young shrimp and when they are adult brine shrimp. They are usually perfectly thin and can live in harmony and the same water as Danio.

How Many Can Be Kept Together in Tank?

Celestial Pearl Danios should be kept in a minimum tank size of 10 gallons since they should be grown in groups of at least six. While it may be tempting to purchase a tank consisting of males because of their more appealing color, this is not a smart idea.

Because males display aggressive actions in remote locations, especially those with insufficient hiding places, to frighten other males into keeping away from their territories, this is the fact. This is especially true when there aren’t enough potential mating partners, forcing them to battle until a hierarchy is created.

As a result, you must have at least an equal number of males and females. And having more females is important if you don’t want any victims in your hands.

Only one male should be in each tank, and if you plan on adding more fish in the future, be sure to provide two extra gallons of room for each new tank resident.

The Nitrogen Cycle:

The health of any fish, especially Celestial Pearl Danios, depends on how well you manage and monitor the nitrogen cycle in your tank. When the toxins in the water, which are made up of ammonia, nitrite, and to a lesser extent nitrate, exceed a particular threshold, the environment in which the fish dwell is harmed.

As a result, the fish’s immune system is weakened, leading to several other illnesses and death in the worst-case situation.

As a result, these Danios should never be added to a tank that hasn’t properly cycled. Instead, you maintain good water conditions, keep a check on your ammonia, nitrite, and nitrate levels regularly and make sure to replace your water once every 3-4 weeks partly. 

The smaller your tank, the more frequently you’ll need to change the water to keep the Danios safe.

Water Parameters:

  • Temperature: Celestial Pearl Danios prefer temperatures between 73 and 79 degrees Fahrenheit (22 and 26 degrees Celsius).
  • pH: Celestial Pearl Danios thrive in a pH range of 6.5 to 8.4. They like a pH of 7.2–7.5 in their native environment. However, as long as your pH is constant and within range, the Danios will be unaffected by your hit’s particular value.
  • KH: The amounts of carbonate and bicarbonate in your body should be between 5 and 10 degrees. If they drop below that value, the water’s acidity will increase over time.
  • Hardness: These fish like soft to medium hardness waters. As a result, your GH is between 5 and 10 degrees Celsius or 90 and 268 ppm.

Danio Rasbora Galaxy Breeding

How to breed celestial pearl danios? As mentioned earlier in this article, the breeding process was a bit complicated when trying to breed this fish in an aquarium. It seems to have changed and is now a very straightforward and straightforward process.  

Look for a deeper red color for the fins and a belly that looks rounded, and you can see it’s ready.

However, changes in body shape and the ability to see when the time is right are not the only steps in the breeding process for this species. It is relevant to the celestial pearl danio food, what your danio galaxy eats. 

These fish appear to be more likely to spawn when fed live food, possibly due to what they would eat in the wild. So if you repeatedly fail to breed your zebrafish, consider changing the foods they are eating, at least temporarily. 

It’s always good to see if you can seek advice from your local pet store, as long as someone has experience with the species. Fish like this species can lay up to 30 eggs at a time. They can also lay far fewer or even pause between groups. You may not always be able to see fish eggs. 

Still, when you do, you must take steps to move them to a separate breeding pond so that your newborn danio fish can hatch and grow. 

The installation of the breeding aquarium is not too difficult, given the aquarium conditions in terms of pH, water hardness, vegetation, feed, and size.


Having the little heavenly pearl danio fish in your aquariums is a great idea. You have to set up the right celestial pearl danio tank mates with them. It can include a nice touch of color and diversity in your aquarium. 

Note that this is still a brand new species as it was only discovered in 2006. Users do not know much yet, and that our guidelines of fish keeping will increase your knowledge in the years to come. More explorations are likely to be made in the future!

FAQ’S Related To Celestial Pearl Danio

Are the Sky Pearl Danios resistant?

These enthusiastic little swimmers are very hardy fish and resistant to both temperature changes and different pH levels. This is one of the things that contributed to their growing popularity. They are quite easy to store and, most importantly, stay alive.

What do celestial pearls eat in danios?

Known as opportunistic foods, these fish tend to eat a bit of everything depending on what they find. They eat various kinds of plants, zooplankton, and algae, but they can also eat blue dream shrimp and the like. Remember that a danio doesn’t always eat the same thing. So it’s a good idea to try and change it a bit by nurturing different things.

How big are the pearl danios?

A danio is usually no longer than 1 inch. They are small, slender fish that are great for almost any type of aquarium. However, their small size doesn’t mean you have to keep them in too small a tank. They need room to swim like all other fishes.


Having the little heavenly pearl danio fish in your aquariums is a great idea. You have to setup right celestial pearl danio tank mates with them. It can include a nice touch of color and diversity to your aquarium. 

Note that this is still a brand new species as it was only discovered in 2006. Users do not know much yet and that our guidelines of fish keeping will increase your knowledge. In the years to come. More explorations are likely to be made in the future!

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