How Many Neon Tetras Per Litre?

How Many Neon Tetras Per Litre?

How many neon tetras per litre? That’s a question that we get asked a lot here at the fish store. And the answer, unfortunately, is not a simple one. It depends on a number of factors, including the size of the tank, the other fish in the tank, and the general health of the neon tetras.

stocking levels

Most neon tetra enthusiasts recommend stocking at 1-3 neon tetras per litre (2.5-8 per gallon). However, some neon tetra keepers have found they can keep more than this without any problems. Ultimately, it depends on the size of your tank, the filtration you have in place, and how often you perform water changes.

recommended stocking levels

Neon Tetras are a very popular freshwater fish among fishkeepers of all levels of experience. They are relatively easy to care for, and their bright colors add beauty to any aquarium. Neon Tetras are also schooling fish, so they should be kept in groups of at least six. But how many Neon Tetras can you keep per litre?

The recommended stocking level for Neon Tetras is six fish per litre (or two and a half gallons). However, you may be able to keep more Neon Tetras if you have a larger aquarium, or if you provide plenty of hiding places and lots of plants.


Overstocking can cause water quality problems in your aquarium. Neon tetras are a popular freshwater fish, but they are also very sensitive to water quality and overcrowding. It is important to know how many neon tetras you can have per litre (or gallon) of water in order to maintain a healthy aquarium.

The recommended stocking density for neon tetras is 1-2 fish per litre (or 2-3 fish per gallon). This means that you should have a minimum of 2 litres (or 4 gallons) of water for every neon tetra in your aquarium. If you have more than this, you may start to see problems with water quality, such as high ammonia or nitrite levels. Neon tetras are also very sensitive to changes in water parameters, so it is important to keep a close eye on your aquarium if you are overstocked.

If you are thinking about adding more neon tetras to your aquarium, it is best to increase the size of your aquarium instead of the stocking density. This will help to avoid any water quality problems and will provide your fish with more space to swim and explore.


Understocking your aquarium with neon tetras can have a few different consequences. For one, your fish may not have enough to eat, which can lead to health problems. Additionally, fewer fish means fewer waste products in the water, which can lead to poor water quality and potentially unhealthy conditions for your fish. Finally, understocking can also lead to aggression among your neon tetras, as there will be more competition for food and shelter.

stocking density

One of the most important stocking densities to consider when keeping Neon Tetras is the stocking density of the fish in the aquarium. A good rule of thumb is 1 Neon Tetra per litre (1000 litres) of water. This rule applies to all aquarium fish, not just Neon Tetras.

stocking level calculation

To calculate how many Neon Tetras your aquarium can support, you need to understand the stocking level calculation. This stocking level calculation is a system designed by scientists to determine how many fish an aquarium can support without causing harm to the fish or the water quality.

The stocking level calculation takes into account the size of your aquarium, the type of fish you have, and the water conditions in your aquarium. It is important to remember that this calculation is only a guideline and that you should always consult with a qualified aquarium professional before making any changes to your aquarium.

neon tetra care

Neon tetras (Paracheirodon innesi) are freshwater fish and one of the most popular aquarium fish. They are native to the Amazon River basin in South America. Neon tetras are small, only reaching about 1.5 inches (3.8 cm) in length, and have a lifespan of 3-5 years.

Despite their small size, neon tetras need at least a 10-gallon tank. A 20-gallon tank is even better, as it allows for more Tetras and provides more swimming space. Neon tetras are social fish and do best in groups of 6 or more.

When stocking a tank with neon tetras, it is important to remember that they need at least 2 gallons per fish. This means that a 20-gallon tank could theoretically hold up to 10 neon tetras, but it is always best to err on the side of caution and provide as much space as possible.

neon tetra diet

Neon tetras are a species of freshwater fish that are native to South America. They are popular in the aquarium trade and are known for their bright colors. Neon tetras grow to be about 1-2 inches long and prefer to live in shoals or schools of other neon tetras.

Neon tetras are omnivores and will eat a variety of foods, but they prefer a diet that is high in protein. In the wild, their diet consists of small insects, larvae, and crustaceans. In captivity, they can be fed a diet of live food, frozen food, or flakes/pellets designed for neon tetras.

When it comes to determining how many neon tetras should be kept per litre, there is no hard and fast rule. A good rule of thumb is 2-3 neon tetras per litre. However, it is important to note that this number will vary depending on the size of your fish and the gallon size of your aquarium.

neon tetra breeding

Neon tetras are one of the most popular freshwater aquarium fish for both beginners and experienced fishkeepers alike. They are relatively easy to care for, peaceful and can add a splash of color to any aquarium.

If you’re interested in breeding neon tetras, it’s important to know how many neon tetras per litre you should have. Tetras are egg-layers and need a large group of adult fish in order to breed successfully. A good rule of thumb is to have at least 8-10 neon tetras per litre (or 2.5 gallons). This will give the adults plenty of space to swim around and the juveniles plenty of hiding places to avoid being eaten by their parents or other tank mates.

Neon tetras are typically ready to breed when they reach 4-6 months old. The best time of year to breed them is during the spring or summer months when the water temperature is warm (around 24-26 degrees Celsius or 75-79 degrees Fahrenheit).

neon tetra lifespan

Neon tetras are a relatively small freshwater fish that are popular among aquarium hobbyists. These brightly-colored little fish are fun to watch and relatively easy to care for, making them a good choice for beginner fishkeepers.

One of the most important things to know about caring for neon tetras is how many fish can be safely kept in a single aquarium. This is important not only for the health of the fish, but also for the overall balance of the aquarium ecosystem.

A good rule of thumb is to stock your aquarium at a ratio of one neon tetra per litre (approximately four neon tetras per gallon). This stocking density will allow the fish plenty of space to swim and will help to keep water quality high.

Tammy Slater

Tammy Slater is the founder of, a home and garden blog that provides inspiration and resources for homeowners and renters alike. A self-taught DIYer, Tammy loves nothing more than tackling a new project in her own home. When she's not blogging or spending time with her family, you can usually find her rooting around in the garden or at the hardware store.

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