GloFish Danio Stats InfographicGloFish Danios are vibrantly colored, easy-to-care-for little fish that brighten up your aquarium.

These hardy fish, with their unique ability to glow, are fun pets for children and parents. GloFish are popular aquarium fish since they are low-maintenance.

Keep reading to learn how to keep your GloFish Danio happy and healthy.

What Is the GloFish Danio?

The GloFish Danio was created when scientists implanted natural fluorescent protein genes from sea coral into the zebrafish. This natural fluorescence gene led to neon fish that glow at all times.

The GloFish is long and slim like the zebrafish. But the GloFish Danio’s mouth turns upwards slightly.

GloFish are extremely playful and social. They need companions and ample space to remain happy. You will enjoy watching them dart from one side of the aquarium to the other as they chase each other.

– Classification of Wild Stock

Order Cypriniformes (carps)
Family Cyprinidae
Genus Brachydanio
Species Rerio

– What Colors Does the GloFish Come In?

Glofish danioGloFish were first modified to radiate a bright pink color. As they became more popular, green, yellow, blue, purple, and orange colors were created.

The GloFish inherit their stunning colors from their genetically modified parents. These brilliant colors will never fade as they are not painted, dyed, or injected. The coloring is then passed on to their offspring. Therefore, the fry would have the same color as one of the parents.

You can choose GloFish Danios from various neon colors such as purple, blue, red, orange, and green.

GloFish Danio Care

GloFish are freshwater aquarium fish. The GloFish Danio is one of few GloFish that can tolerate cooler temperatures. The ideal temperature to maintain is between 72 to 80 degrees Fahrenheit.

Try to avoid sudden changes in the temperature. Any drastic temperature changes will stress your fish and lead to illness. You could have a 100-watt heater in a 20-gallon tank to help maintain water temperature.

Keep the tank lit during the day to reduce stress for the fish.

Listed tank sizes are the minimum

Size Up to 2 inches
Tank 30 inches (15 gallons)
Strata Generally upper and mid-level
PH 6.8 – 7, tolerates a wide range.
Hardness Soft to moderately hard (0 to 18 DH)
Temperature 72 F to 80 F (22 -27  C)

– How to Set Up the Tank

The correct way to set up a GloFish tank is like other freshwater aquariums. First, you should plan to fill the tank and run the equipment for one to two weeks until the tank is fully cycled.

This cycling process builds a colony of beneficial bacteria. The process maintains ideal conditions in the tank. It would be best to ensure your tank has cycled before you add any fish. This will help the fish acclimate easily.

– Maintaining the Tank

It is best to carry out routine maintenance tasks. Check the water temperature daily to make certain it is in the range of 72 F to 80 F.

Check the water level once a week and replenish the water lost by evaporation. Once a month, replace 25 to 50 percent of your tank volume with dechlorinated water of the same temperature. This procedure removes waste and keeps the environment safe for your GloFish.

You may also want to test your tank water once a week to check that there is no sudden alteration in the water chemistry. Make sure the pH remains between 6.8-7. Aquarium test kits are available at all fish stores.

Place a thermometer and water heater in your tank to regulate the temperature. Inspect your GloFish often. Healthy GloFish have clear eyes, a good appetite, and bright, even coloring.

Another sign that your GloFish are in good shape is that they swim around actively.

– What Tank Sizes Are Suitable?

The GloFish Danio is a schooling fish species that is happiest in groups. It is very active, and you will enjoy watching them swoop around the tank.

It’s best to keep them in as large a tank as you can afford. A 15-gallon aquarium will comfortably house a school of six. For every extra fish you add beyond this, a larger tank size is essential.

Buy a long tank. These hyperactive little fish need lots of open water to swim in.
GloFish find comfort living in a group. We recommended having at least five fish in an aquarium. A 20-gallon tank would be ideal.

If you keep them in 3, 5, or 10 gallons of water, they will have a poor quality of life. The fish can also become aggressive in small spaces.

– Adding Water and Accessories to the Tank

Wash aquarium gravel, ornaments, and rocks with warm water before you put them in your tank. Do not use soap or detergents as they are very harmful to your fish.

Put the gravel in a colander. Stir the gravel and then drain the water. Repeat this process until the water runs clear.

Fill your tank up to one-third full with room temperature water from a clean bucket.
You should not pour water straight onto the gravel. Instead, place a plate or saucer on the gravel and pour the water onto it. This tip will help keep the gravel in place.

Once the gravel and stones are in place, add some live or artificial foliage. GloFish enjoy natural plants, and you will see them darting in and out of the fronds.

Add a water conditioner to dechlorinate the water. Chlorine is not safe for your GloFish.

GloFish Danio Tank Companions

Once you have a suitable number of danios, you can add other coldwater species to your aquarium. But it’s vital to match the fish’s activity level to prevent stress levels from rising in the tank.

It’s best to avoid putting slow-moving and docile fish with the GloFish Danio. They may also nip sometimes at fish with longer fins, so it’s generally best to avoid such species as well.

– Selecting the Best GloFish Tank Mates

GloFish danios are active swimmers. You will observe them dashing and darting through the aquarium. They are also schooling fish, which means that they dislike being alone.
Schooling fish species may become aggressive and depressed if they live by themselves. So you should keep them in small groups of 6 to curb their semi-aggressive nature.

Glo Danios will enjoy the company of other fast swimming, active fish. Small community fish make perfect companions.

Some Compatible tankmates for the GloFish that will ensure a happy aquarium include:

  • Guppies
  • Mollies
  • Platies
  • Swordtails
  • Barbs
  • Rainbows
  • Tetras
  • Loaches
  • Plecos
  • Corydoras
  • A single small shark

Always consult an aquarium expert before buying any new fish for your aquarium. They will ensure the water temperature requirements of each species match.

Breeding GloFish Danios

GloFish sold in stores and online have been bred from the offspring of the original fluorescent Zebra Danios. The remarkable colors of each GloFish are passed down through the parents. These neon colors remain throughout the lifetime of the fish and pass on to their fry.

GloFish can be a straightforward fish to breed if your tank meets specific requirements. They need the best food possible, a clean environment, and a peaceful environment.

Danios can be bred in captivity, but you need extra care to raise fry to adults. Provide a separate tank of 5-10 gallons for the process. Spread gravel or marbles on the tank floor. You must keep the water level low to stop the fish from eating the eggs as soon as they lay them.

Danios are egg-scattering fish that generally spawn in groups. But a single pair of male/female can also breed. Introduce several conditioned male and female GloFish into the tank. Once the spawning is complete, the marbles will protect the eggs as they sink between them.

As with many species, there is the danger of the parents eating their eggs after they are laid. The chances for fry to survive are greater if you separate the eggs from the parents.

The eggs should hatch after a day or two. Once the fry begins to swim, you can start to feed them. Finely-ground flakes, paramecium, infusoria, or commercial liquifry are appropriate food.

Do GloFish Danios Need a Special Diet?

People often ask what GloFish Danios eat. Perhaps it’s because they are so colorful, owners think they may need a special diet. However, their diet is no different from the regular tropical fish.

GloFish danios are not picky eaters. But, on the other hand, you want to make sure they eat a variety of foods that maintain their bright red, orange, yellow, green, blue, and purple colors.

In their natural habitats, danios are omnivores. This means they eat both animal-based and plant-based food.

Like their sister, the zebrafish, GloFish Danios eat practically any type of commercial fish food recommended for aquarium fish. They eat live, frozen, or flake fish food. Remember to thaw the frozen food first before feeding them.

Consider giving your GloFish small quantities of food twice a day. They should be able to finish the entire amount within five minutes. Let them eat all the food before adding any more since leftover food will pollute your tank.

It’s the best option to have a variety of live, frozen, and freeze-dried food available for your aquarium. This ensures your fish eats a well-balanced, healthy diet.

The staple diet should consist of high-quality fish food such as flakes or pellets. In addition, you may like to offer them treats like bloodworms, brine shrimp, or mosquito larvae every once in a while.


We’ve explained in detail how to care for your GloFish Danios.

So let’s sum it up to make certain you are good parents to your colorful little pets:

  • Glofish danio tank matesGloFish Danios’ neon color will not fade as they inherit it from their parents.
  • They are hardy little fish that are easy to look after.
  • GloFish Danios are happiest living in groups.
  • You can have 5 or 6 fish in a long, 15-gallon tank.
  • They are not fussy about food, but you must provide a balanced diet.
  • You can breed them at home.

GloFish are easy to care for. If you’re looking for GloFish to liven up your aquarium, you will find them in most major pet store chains as well as many independent pet stores.

5/5 - (13 votes)


Please enter your comment!
Please enter your name here