The Ultimate Guide || Glowlight tetra care || Tankmates, Temperature, Size, Lifespan, Breeding….2021


glowlight tetra fish care || glow light tetra fish

The glowlight tetra ( Hemigrammus erythrozonus ) is a beautiful freshwater fish. These fish are colorful fish that are popular among fishkeeping lovers.

The glowlight tetra comes from the river of Guyana, South America. In the wild, they used to live in black water and streams.

Glowlight tetras are hardy and very easy to care for. The glowlight tetra fish was firstly described in 1930.

These fish will be the best option for you as they are easy to care for and will enhance the beauty of your aquarium.


If we are talking about their appearance the glowlight tetras, they look very attractive.

Their primary body colors are silver-peach stripes divided in reddish, golden color which looks really pretty and their body.

Their body stripes look like the bulb’s light or glowlight; the dorsal fin of these fish looks reddish on the edge.

And the anal or pelvic fins look white on the edge

Glowlight Tetra Size 

The average size of these small fish is around 1.5 inches. In some cases, the adult glowlight tetra grows up to 1.7 inches.

As they are small-sized fish they can be a good choice for nano tanks.

Glowlight Tetra behavior 

Glowlight Tetra is a very calm nature’s fish, ideally, they’re Sholing fish and love to live with a group of their own nature species. 

If you keep glowlight Tetra fish alone they will grow very slowly and live under stress. however, you should keep them with at least a group of 6 fish and they will live happy and healthy

Glowlight tetras price

The glowlight tetras are not so expensive. You can easily buy this tetra for $3 to $5, you need to buy a group of 6-8 fish that will cost you around $18 to $25 for a group.

Tank size 

Glowlight Tetra is tiny fish you don’t need a bulky tank, just need to set up a 10-15 gallon tank for a group of 6-8 fish. 

If you set up a 20-gallon tank, it would be the best option in the larger tank they will live comfortably. 

They will have more space for swimming, which also helps you to maintain the water parameters of your aquarium. keep them with at least 6 to 8 says that do well in a group.

Glowlight tetra tank mates

The glowlight tetras are shoaling fish and like to live in groups. 

Some of the best tankmates for glowlight tetra fish are:-

Glowlight tetra feeding

As we mentioned earlier glowlight tetras are omnivorous fish that can eat almost every type of food. Though, you should try to feed according to their mouth. 

It is the best thing if you will provide them with high-quality died of micro pellets and also small flakes. 

  • Blood worm
  • Brine shrimp
  • Small flakes
  • Water flea
  • Micro pellets

Sometimes you can also provide them high-protein snacks, you can feed them 2-3 times a day. 

Water parameters 

For any fish, we recommend you to copy-paste their natural habitat. 

As the glowlight tetra used to live in the wild with soft and slightly acidic water similarly you can do it too.

These are strong fish that can live with almost any water condition but there are some similar parameters that you should follow:-

Water temperature should be maintained between 72° F- 82°F. 

Water hardness required water hardness is between 5 to 10 DH. 

Water pH value:- try to keep water pH on the acidic side 6.0-7.5.

Make sure to keep a low level of ammonia and nitrate in your tank. 

Glowlight tetra care

The glowlight tetras are surprisingly easy to care for and harder fish than other tetras

Glowlight tetra breeding

The breeding process is not a difficult task for you. First, you need to set up a separate tank for the breeding process. Now here you can set up a 2-gallon tank to breed them. 

Put a male or a female into the breeding tank and the water level of the breeding tank should be around 12 to 16 cm.

The water temperature of the tank should be maintained between 24°C to 26°C (75.2 to 78.8°F ) and try to keep the pH level between 6.6 to 6.8.

And the light should be low or dim, add some smaller plants or leaves on which the fish lay their egg.

Now, wait for 5 to 6 days for water preparation, and after preparing water pour it into the breeding tank.

The best time to put fish into the tank is in the evening time, during the night they will adjust to a new environment and will start spawning in the morning.

Sometimes it will take some time or day so just don’t worry about it.

Here the main factor that somewhere simulates the spawning process is the natural environment like sunrise and warm water.

For providing a natural environment you can add some fresh and warm water(300-400ml) in the morning time.

After spawning the female fish starts laying eggs. a fish lays between 300-400 micro/tiny eggs which look transparent.

After the spawning or egg-laying process makes sure to remove all the adult fish from the breeding tank as they are omnivorous and can eat their own eggs.

After 24 to 48 hours of spawning, larva appears from the tiny and micro eggs. about 5 to 6 days the small baby fish start swimming,

In the beginning, you can provide them with infusoria in feeding to make sure they are big enough to eat that food.

After some days you can provide them with a large amount of food. These juveniles grow faster than adult fish, they basically swim at the bottom area of the tank.

After about a month you can easily see the glowing stripes on their body. This is really a beautiful moment of their life.

During this time small fish are very sensitive to all types of diseases and fungal infections.
you should take care of these fish especially during this time.

And maintain proper water parameters and keep the tank water clean, now you can add these beautiful fish into the community tank.

Health and Disease 

You don’t need to worry about their disease as they are hardy can fight any kind of disease. 

Still, some common diseases can catch your fish if you don’t observe water parameters at the right time. 

Some most common diseases which you want to know about:- parasitic infection, bacterial infection, fungal infection, ich infection. 

Most fish suffer from ich disease, ich can spread to other fish as well. Ich can cause white spots on a fish’s body, it is also called white disease.

This disease can create itching problems in your fish. when you find any symptoms like this remove that fish from your community tank.

And quarantine that fish in a separate tank till the fish get recovered. this is a great practice for all the community fish.

In such a compact environment the disease has the power to spread and wipe out an entire group of fish.

It’s seen that most of these diseases are preventable with proper care and tank maintenance keep your water parameter accurate and keep monitoring.

Try to replace at least 20-25 % of your aquarium water weekly water plays the main role in fish keeping hobby.

By maintaining water parameters you can avoid these diseases. still need to take precautions and keep your fish healthy.


Are glowlight tetras easy to breed?

Yes, glowlight tetras are not challenging to breed.

Do glowlight tetras lay eggs?

Yes, glowlight tetra lay eggs since they are egg layers

how often to feed glowlight tetra?

You need to feed your glowlight tetra 2-3 times a day,(twice or thrice).

Do tetras eat their babies?

Yes, they can eat their own eggs since they’re omnivorous they don’t care about their eggs or fry.

do tetras die after laying eggs?

In fact, glowlight tetras are not going to die after laying eggs.

What do baby tetra eggs look like?

Glowlight tetra fish eggs look tiny and white or yellow in color. These eggs are round and will look like the point of a pen.

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