How Many Chili Rasbora in 5 Gallon – With Examples

The Complete Guide to Chili Rasbora Care

A small school of 6 Chili Rasbora will be housed in a 5-gallon nano tank. You’ll need a bigger tank if you want a bigger school or if they’re going to a communal aquarium.

Keep in mind that, while these tiny fish like a dense environment, they still want space to swim. A small school of 6 Chili Rasbora will be housed in a 5-gallon nano tank.

You’ll need a bigger tank if you want a bigger school or if they’re going to a communal aquarium. Keep in mind that, while these tiny fish like a dense environment, they still want space to swim.

How Many Chili Rasbora in 5 Gallon

If you have a spare 5-gallon aquarium (and a passion for rasboras), you might be wondering if any rasboras will fit in it. (If so, how many people can you fit inside?)

Related Guide: The Complete Guide to Chili Rasbora Care

A colony of 6-8 Chili Rasboras or 5-6 Pygmy Rasboras can be kept in a 5-gallon aquarium. You can also have 6-8 Strawberry Rasboras in your population. Due to the limited size of the 5-gallon aquarium, larger Rasboras, such as neons or Harlequin Rasboras, should be avoided.

Let’s take a closer look at the type of setup you’ll need to keep rasboras in your nano tank.

Overview of Chili Rasbora

Chili Rasbora is a little schooling fish that looks wonderful in a nano tank or in a bigger community tank. They are a lot of fun to watch in school and have terrific personalities.

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One of the best things about Chili Rasboras is how active they are, which adds life to your aquarium. They’re also bright and noticeable, giving your community aquarium a gorgeous look.

It’s all Chili all the time in a stand-alone tank, and they’ll put on a colourful show that’ll keep you fascinated all day.

Another advantage of putting them in a community tank is that they are really quiet and get along with other fish and invertebrates (well, the peaceful ones).

Read on for care recommendations, history, and everything you need to know about keeping these interesting schooling fish in the best possible conditions.

The Chili Rasbora (Boraras brigittae in scientific terms) is a beautiful micro fish that swims and plays peacefully in schools.

They are not only stunning fish, but they also have fantastic personalities. They really do have everything going for them in a small package.

Chili Rasbora, sometimes known as Mosquito Rasbora, is a small tropical fish native to Indonesia’s Southwestern Borneo.

It is one of the tiniest tropical fish seen in home aquariums. The males are distinguished by their ruby red color (when they are properly cared for.)

Dieter Vogt first described the Chili Rasbora in 1973, and it was given the name Rasbora brigittae in honor of Dieter’s wife, Brigitte. Because the Chili Rasbora is not a real Rasbora, it was placed in the Boraras genus in 1993.

Mosquito Rasbora is the alter ego of the Chili Rasbora, who lives in a mosquito-infested environment.

Although there are several Boraras species available in the aquarium trade, hobbyists choose Chili Rasboras because they are so attractive to look at.

How many gallons do chili rasboras need?

5 gallons

Chilli Rasboras require a minimum tank capacity of only 5 gallons. As you can see, one of the benefits of keeping little fish is that you don’t need a huge tank to have a successful collection. As a result, if at all possible, we recommend going with a larger tank.

Can you put rasboras in a 5-gallon tank?

Rasboras can certainly be kept in a 5-gallon tank. Keep huge rasboras to a minimum, and don’t put anything else in the tank with your rasboras. If you follow these steps, you’ll be well on your way to having a lovely little aquarium.

How many chili rasboras can go in a 6-gallon tank?

How many chili rasboras are in a gallon of water? In groups of less than six, these guys should be kept in a 5-gallon tank. However, two chili rasboras per gallon will suffice.

How many rasboras can go in a 10-gallon tank?

Two Rasboras can be kept in a 10-gallon tank (the minimal minimum, though we don’t encourage it). You may keep 5 Rasboras in a 20-gallon tank (this is what we consider to be the minimum since they are a schooling fish).

How many Chili rasboras per gallon can be kept?

Make sure the Chili Rasbora is kept in a group of at least six people. They won’t be satisfied if they had less than that – they were intended to be together.

Two Chili Rasbora can be housed per gallon, therefore a 5-gallon tank may hold six fish.

Rasbora for a 5 Gallon Tank: Which Are the Best?

If you want to keep rasboras in a 5-gallon aquarium, start by seeking rasbora species that are less than 1 inch long. The more compact, the better.
A few species of nano rasbora that will fit in a 5-gallon aquarium are listed below.

  1. (Boraras urophthalmoides)Least Rasbora
  2. Strawberry Rasbora (Boraras naevus)
  3. Chili Rasbora also called Mosquito Rasbora (Boraras brigittae)
  4. Pygmy Rasbora or (Boraras maculatus)
  5. Phoenix Rasbora or (Boraras merah)
  6. Galaxy Rasbora or (Danio margaritatus)

Chili Rasbora Tank Companions

The Chili Rasbora is a very laid-back fish that gets along well with other smaller, tranquil fish. It’s also suitable for smaller invertebrates, such as dwarf shrimp. Keep a safe distance from aggressive and larger fish that will both steal and eat their food.

Chili Rasbora Tank Compatibility

  1. Amano Shrimp
  2. Celestial Pearl Danios
  3. Cherry Shrimp
  4. Chocolate Gourami
  5. Cory Cats
  6. Neons
  7. Sparkling Gourami
  8. Wood Shrimp

Tank and Habitat Conditions

Make sure your Chili Rasboras have a planted aquarium with floating plants and a dark substrate to get the best colour possible.

Sand or gravel with a fine texture is suitable for the nano Chili Rasboras.

These circumstances will also promote the best possible health for these tiny fish.
They live in blackwater streams and pools in their natural habitat in Borneo, so the dark substrate will appeal to their desire for a dark bottom.

They require soft water with a low pH in their native habitat, and they will require it in your home aquarium as well.

A lush environment with both planted and floating plants will appeal to them. Roots and branches mimic their surroundings, and hanging vegetation keeps the Chili Rasboras out of direct sunlight.

Although you can keep them in a 5-gallon nano tank as a tiny school of six, if you keep them in a larger tank, you will have enough area for a large and magnificent school that will generate a moving light show in your aquarium.

They will not only have a blanket to investigate if you include real plants in your tank setup, but the floating plants will also provide a habitat for plankton and worms, which are the perfect size feast for small Chili Rasbora mouths.

As previously said, the plant cover will dim the light in the tank, allowing for the growth of more intense and vibrant colours.

Conditions of the Water

The slow flow of water in Chili Rasbora’s natural environment is something you should try to replicate in your home tank. Because these fish are so small, they won’t be able to withstand a strong current.

Add branches, driftwood, logs, and other decorations to break up any current that is too strong. The plants will also aid with the current.

They do require a filter because they need clean water to survive; just make sure the filter isn’t too powerful. Because they are so small, any change in water condition might be lethal, therefore you must keep an eye on them and keep them stable.

Chilli Rasboras prefer water that is both soft and acidic, in addition to a slow stream. You’ll need a test kit to keep track of levels, and you can dilute tap water with distilled or reverse osmosis to get the right conditions.

How to Set Up a Rasbora Aquarium in 5 Gallon

The purchase of your aquarium is the first step. If you don’t have one already, you should opt for an aquarium that is as lengthy as feasible.

Rasboras require a lot of areas to swim back and forth, thus a landscape (long and short) aquarium will be far more beneficial than a portrait (tall and slim) tank.

In your tank, you’ll also want to keep things as stable as possible. This entails weekly water changes, as you might anticipate. But there are a few things you should do as well:1. Set a timer for the lights.

Set a timer to turn on and off your light at the same time every day. To do this, most aquarium lights (except the Fluval Spec V) may simply be plugged into a $10 Walmart smart plug. This will allow you to adjust the light cycle in your aquarium in order to decrease algae growth. This will provide your fish a regular schedule of light and dark, in addition to minimizing algae.

2. Plants

To absorb pollutants in the water, fill your aquarium with as many plants as possible. Hardy plants such as Java Fern, Java Moss, Anubias, Crypts, and floating plants are ideal for this, but they are far from the only options.

3. Adornments

To avoid upsetting your fish, make sure they have somewhere to hide.

You want to make sure your fish feel safe in your aquarium, whether you utilize natural hiding spots like mature plants that provide plenty of shade, plastic decorations (which might generate brown algae), or flipped coconut tunnels with plants affixed to the top.

You don’t want them to feel like they’re always out in the open, vulnerable to being eaten.

4. Providing nourishment

To avoid wasting food, make sure you learn how to feed them properly. Chilli rasbora and a few other species on this list only feed in the centre of the water column, therefore you’ll want food that stays in the middle for as long as possible to avoid food buildup on the bottom.

5. Cycling

Make sure your aquarium is fully cycled before you start using it, which should go without saying. Setting up your aquarium and putting your fish on the same day is the last thing you want to do.

To do a fishless cycle, you can acquire pure ammonia from online fishkeeping businesses, or you can transfer filter media from an existing aquarium.

If you can’t wait, acquire some of the instant cycling stuff to put in with your fish if you can’t wait. It isn’t ideal, but it is an improvement over nothing.


Rasboras can certainly be kept in a 5-gallon tank. It may not be the best setup, but if you go into it with a strategy, you can be successful.

You’ll want to make sure you get the proper kind of rasbora (one that will stay alive for a long time).

8′′ or less), plant as much as possible in your tank, and keep an eye on water factors to keep your fish healthy.

Keep huge rasboras to a minimum, and don’t put anything else in the tank with your rasboras.

If you follow these steps, you’ll be well on your way to having a lovely little aquarium.


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