Lemon Tetra: The New Wonder Fish

Meet the Lemon Tetra, the new wonder fish that is taking the aquarium world by storm. With its bright lemon-yellow color and playful personality, it’s no wonder why so many fish enthusiasts are eager to learn more about this beautiful species. In this post, we will provide a comprehensive summary of the Lemon Tetra, including its appearance, lifespan, and average size.

We will also cover everything you need to know to properly care for your Lemon Tetra, including tank size, water parameters, and potential diseases to watch out for. Plus, we’ll give you tips on what foods to feed them, how to breed them, and even what other fish make good tankmates. Whether you’re a seasoned aquarium pro or just starting out, this post has everything you need to know to keep your Lemon Tetra healthy and happy.

lemon tetra sepcies summary

Species Summary

Lemon tetra (Hyphessobrycon pulchripinnis) is a freshwater fish that is native to the Amazon River. They are a peaceful and friendly species, and it is recommended to keep them in groups of 6 or more. A minimum of 10-gallon water is required to ensure that they can swim comfortably.

They lay eggs and the parents do not care for the fry, so it is recommended to remove them from the main tank and place them in a separate tank to avoid any harm to the newborns. Lemon tetras like soft water, a well-lit aquarium, and live plants.

They can cost around $6 per fish and have an average lifespan of 6 to 8 years. They are a hardy species and are relatively easy to maintain for beginners. If you are looking for an addition to your freshwater aquarium, Lemon tetras are a great option.


Lemon Tetra is a popular and easily recognizable fish species with an overall yellowish coloration and a black line running along the sides of their bodies. They have an average size of 1.5-2 inches (3.75-5cm) and are most notable for their bright yellow and black stripes.

Their fins are transparent and the dorsal fin has a yellowish hue, while the tail fin is forked. The slender body of the Lemon Tetra gives them an overall elegant appearance, making them a highly sought-after addition to any aquarium.


Lemon tetras are a popular freshwater fish that can make a great addition to any aquarium. These fish typically live up to 6 years in an artificial environment, although proper care and a healthy environment are essential for them to reach their full lifespan potential. The lifespan of lemon tetras ranges between 4 to 8 years depending on the conditions provided.

Maintaining the right environment for lemon tetras is key to their well-being. Their ideal water conditions include a pH of 6.0 to 7.5 and a temperature range of 70-80°F (21-27°C). In addition, a minimum tank size of 10 gallons is recommended for a school of 6 lemon tetras. Overall, with the right care, lemon tetras can be a delightful and long-lasting addition to any aquarium.

Average Size

The Lemon Tetra is a popular species of fish, known for its striking yellow and silver coloring. They typically grow to a size of 1.5 to 2 inches (3.75 – 5cm), with 1.5 inches being the average at adulthood, and 1 inch being more common. The largest scientifically measured male Lemon tetra was 3.8 centimeters (1.5 inches) long, while the largest female was 3.6 centimeters (1.4 inches).

Fully grown Lemon Tetras will usually be between 4-5cms and the maximum weight recorded for males is 1.4 grams and for females, it is 1.2 grams. Despite their small size, Lemon Tetras are a popular addition to many aquariums due to their vibrant coloring and peaceful nature.

lemon tetra care

Lemon Tetra Care

Lemon Tetras are easy to care for and are popular among fish enthusiasts. They can tolerate a wide range of water parameters, making them an ideal choice for beginners. Lemon Tetras generally have a lifespan of 6 to 8 years if cared for properly.

They are schooling fish that need a minimum of 10 gallons of water and should be kept in schools of 6 or more. You should maintain the ideal water parameters for Lemon Tetras, which include a pH range of 6.0 – 7.5, soft water, and a temperature of 70-80°F (21-27°C). Providing a well-balanced diet and a suitable aquatic environment will help ensure that your Lemon Tetras are happy and healthy for years to come.

Tank Size

Proper lemon tetra care is essential to ensure the health and happiness of these beautiful fish. When it comes to tank size, a minimum of 20 gallons is recommended for a school of six lemon tetras. However, a single tetra can be kept in a 10-gallon tank. The tank should be planted, and the water should be slightly acidic and soft to medium in hardness.

For those keeping other species with the lemon tetra, a larger tank size is recommended to ensure they have plenty of space to swim around. The tank temperature should be kept between 70-80°F (21-27°C), and a quality filtration system should be used to maintain water quality. With proper care, lemon tetras can thrive and bring joy to any aquarium.

Water Parameters

When it comes to caring for Lemon Tetra fish, it’s important to ensure that their water parameters are suitable for their needs. These fish prefer soft water with a pH range of 6.0 to 7.5 and a hardness of less than 8° dH. It’s also important to maintain a water temperature between 23 and 28° C (73.5 – 82.5° F) and a pH range of 6.0 to 7.4.

To keep the water clean and healthy for Lemon Tetra, aeration and good quality filtration should be provided. It’s also important to avoid extremes of high pH (8.0 or higher) and hardness, which can stress or harm the fish. With proper water care, Lemon Tetra can thrive and make a great addition to any aquarium.

What To Put Inside Their Tank

Proper care is important to keep your Lemon Tetra fish healthy and happy. They should be kept in groups of 6 or more in a 10-gallon tank with soft and slightly acidic water with a pH range of 6.0-7.5 and a temperature range of 70-80°F (21-27°C). It is recommended to replicate their natural environment by planting the tank with live plants. Lemon tetras are peaceful fish that can be kept in a community aquarium with other species of similar size.

The water should be slightly acidic and the water hardness should be soft to medium. When it comes to feeding, you should provide them with a variety of foods such as flakes, pellets, and frozen or live foods. Lemon tetras are sold in packs of 10 at a regular price of $2.20, making them an affordable and enjoyable addition to any aquarium. With proper care, your Lemon Tetra fish can thrive and become a new favorite in your community tank.

Potential Diseases

Proper care is crucial when it comes to keeping your Lemon Tetra healthy. Like any living creature, Lemon Tetra are susceptible to diseases, including common freshwater diseases such as Ich, bacterial infections and parasitic infections. Neon Tetra Disease, a parasitic infection, is particularly dangerous and can spread quickly if not prevented. Dropsy, anchor worm and mouth fungus are also potential diseases.

To prevent disease, it is recommended to quarantine new fish before introducing them to an established tank. A proper diet and clean water conditions are also important in keeping your Lemon Tetra healthy.

Regular water changes and maintaining proper filtration can go a long way in preventing potential illnesses. If you do notice any symptoms of illness, it’s important to take action quickly to prevent the spread of disease throughout the tank.

Food & Diet

When it comes to caring for your Lemon Tetra fish, it’s important to pay attention to their diet. Lemon tetras are omnivorous and can consume a wide variety of small invertebrates and plants. To provide a balanced diet for your fish, it is recommended to offer a variety of foods such as high-quality tropical flakes, live or frozen meaty foods, and boiled vegetables like zucchini.

In the wild, Lemon tetras feed on invertebrates, crustaceans, and plant matter, so it’s important to replicate this varied diet in their tank. It’s also important to avoid overfeeding, as this can lead to health issues and water quality problems. By providing a well-rounded diet, you can help ensure the long-term health and happiness of your Lemon tetra fish.

Behavior & Temperament

Lemon Tetras are generally known for their peaceful and easy-going temperament, making them a great addition to any community tank. They are active and playful and prefer to stay in groups of 6 or more, where they can swim and interact with each other freely. However, males can become showy and show some aggression when trying to court females.

It’s important to note that without a group, Lemon Tetras can become anxious and reserved, which can lead to health problems. In-fighting is not a significant problem with Lemon Tetras, and it rarely results in serious injury. As long as they are kept in a well-maintained and appropriately sized tank, Lemon Tetras can thrive and bring color and life to any aquarium.

Lemon Tetra Tank Mates

When it comes to Lemon Tetra care, it’s important to consider the ideal tankmates for them. While Lemon Tetras can be kept with other fish, they typically prefer their own species as tankmates. Other great options for tankmates include Cory Catfish, small Danios, Neon Tetras, Cardinal Tetras, and other tetras of a similar size.

Additionally, including fine leafed plants in the aquarium setup is important when breeding Lemon Tetras to help the female release her eggs. Some of the other ideal tankmates for Lemon Tetras include Guppies, Mollies, Platies, Corydoras, and some dwarf Gouramis. Overall, with proper care and attention, Lemon Tetras can be a wonderful addition to any aquarium.


If you’re looking to breed lemon tetras, it’s important to know that it is a moderate difficulty process that requires a dedicated aquarium for the spawning process. The aquarium should have a very fine mesh over the entire surface to allow the eggs to fall underneath, and should include plants like Echinodorus and Java moss.

To increase the success rate of breeding, several females can be combined with one male in the aquarium. When spawning occurs, the female will release eggs among fine leafed plants. The fertilized eggs will then hatch after approximately 24 hours. With proper care and attention, you can successfully breed lemon tetras and enjoy their beauty in your aquarium.

Habitat and Tank Requirements

Proper care for Tetras is essential to ensure their health and longevity. As native inhabitants of the Amazon River and its surrounding rivers, maintaining an ideal aquarium habitat is important for this species. Lemon Tetras should be kept in a school of at least 6, making a minimum tank size of 10 gallons necessary.

The ideal water parameters for Tetras include a pH range of 6.0 – 7.5, soft water, and a temperature of 70-80°F (21-27°C). It’s also recommended to include fine leafed plants in the aquarium setup to provide shelter and support breeding. In summary, with appropriate care and maintenance, Lemon Tetras can thrive and become a beautiful addition to any aquarium.

Tank Conditions

To ensure the health and longevity of your Tetras, it’s important to provide them with the proper care. The ideal temperature range for Lemon Tetras is between 72-82°F (22-28°C), and their optimum water hardness falls between 6.0-7.0 while the pH level should be between 3.0-25.0.

When housing Tetras, it’s important to keep them in schools of 6 or more and provide them with a minimum of a 10-gallon tank. Additionally, breeding Tetras can be either easy or difficult depending on the tank mates they are housed with. Proper care and attention to tank conditions will ensure that your Lemon Tetras thrive in their environment.

Tank Mates

If you’re considering bringing Lemon Tetras into your home aquarium, it’s important to know how to care for them properly. When it comes to choosing tankmates, Tetras prefer to be with their own species. However, they can also thrive with other compatible fish species like Neon Tetras, Glo Pristellas, Bleeding Heart Tetras, Guppies, Mollies, Platies, Corydoras, and some dwarf Gouramis.

It’s important to keep in mind that at least five Tetras should be kept together, preferable more, to prevent them from becoming shy and stressed. When selecting tankmates, make sure to choose species of similar size and water parameters as Tetras for optimal health and compatibility. By providing proper care and choosing the right tankmates, Tetras can thrive in your home aquarium and add a beautiful touch to your aquatic environment.

Frequently Asked Questions

What are the ideal tank conditions for keeping lemon tetra fish?

The ideal tank conditions for tetra fish include a pH level of 6.0-7.5 and a water temperature between 72°F-82°F. A tank size of at least 20 gallons is recommended, with plants and hiding spots for the fish to feel secure. They are social creatures and should be kept in groups of at least six individuals. It is important to maintain good water quality by performing regular water changes and using a filtration system.

What do lemon tetra fish eat and how often should they be fed?

Tetra fish are omnivores and their diet can include a variety of foods, such as flakes, pellets, frozen or live food like brine shrimp or bloodworms. They should be fed once or twice a day and only what they can consume in about 3 minutes, as overfeeding can lead to health problems. It is important to provide a balanced and varied diet to ensure they get all the necessary nutrients for their health and growth.

Are there any particular behaviors or tendencies I should be aware of when caring for lemon tetra fish?

When caring for tetra fish, there are some behaviors and tendencies to be aware of. Tetras should be kept in schools of at least six individuals to prevent stress and aggressive behavior. They also prefer to have hiding places in their environment, such as plants or caves.

Tetras are omnivores and need a balanced diet of both flake and live foods. Be sure to maintain good water quality and avoid overfeeding to prevent health problems.

Finally, keep an eye out for any signs of illness or disease and address them promptly with appropriate treatment.


Adding Tetras to your aquarium can bring a whole new level of vibrancy to your aquatic life. They are a peaceful addition to your community and very easy to care for.

These fish require an optimal and stable habitat to survive, which includes a steady diet and other compatible tank mates. Lemon tetras love live plants, and you can easily create an eco-friendly environment in your aquarium.

Be sure to set up their aquarium with the right pH and temperature to help maintain their optimal health. If you are a beginner and looking to start an aquarium, we highly recommend Lemon Tetras! Learn more about their care and requirements in our detailed guide.

Hi, I'm Millie a passionate fish enthusiast and blogger. I loves learning about all kinds of aquatic creatures, from tropical fish to stingrays.

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