Can Guppies Live with Neon Tetras? - "File:Comunidad acuario.JPG" by El fosilmaníaco is licensed under CC BY 3.0.
Can Guppies Live with Neon Tetras? - "File:Comunidad acuario.JPG" by El fosilmaníaco is licensed under CC BY 3.0.


Introducing two distinct and captivating species to a shared aquatic habitat is an endeavor that requires thoughtful consideration and a thorough understanding of their individual needs and behaviors. Among the many intriguing combinations in the world of aquarium keeping, the prospect of guppies and neon tetras coexisting has captured the attention of enthusiasts. Both guppies and neon tetras possess their own unique allure, with vibrant colors and graceful movements that can transform an aquarium into a living work of art. However, the question arises: can guppies live with neon tetras in harmony, or are there intricacies that must be navigated to ensure their compatibility and well-being? Delving into this inquiry necessitates a closer look at the characteristics, behaviors, and requirements of guppies and neon tetras, shedding light on the potential for a captivating partnership within the confines of an aquarium environment.

Appearance and Behavior of Guppies and Neon Tetras


  • Appearance: Guppies (Poecilia reticulata) are small, colorful freshwater fish that come in a wide variety of colors, patterns, and fin shapes. They are known for their vibrant and striking appearances. Male guppies typically have larger and more colorful fins than females. Their tails can be fan-shaped, lyre-shaped, and more, depending on the specific variety. The colors range from vibrant reds, blues, greens, yellows, and more. Female guppies are usually less colorful and have a more subdued appearance.
  • Behavior: Guppies are peaceful and active fish that are well-suited for community aquariums. They are generally social and can be kept in groups without much aggression. Male guppies can sometimes exhibit territorial behavior, especially if there are multiple males in the same tank. Guppies are livebearers, which means they give birth to live fry rather than laying eggs. This reproductive strategy often leads to an increase in their population if not controlled.

Neon Tetras

  • Appearance: Neon tetras are small, slender fish that are widely recognized for their stunning iridescent blue and red coloration. A neon blue stripe runs horizontally along their body, while a vibrant red stripe lies below it. These colors create a striking contrast that makes them very popular in the aquarium hobby. Neon tetras have a streamlined body shape and a forked tail fin.
  • Behavior: Neon tetras are peaceful and shoaling fish, meaning they prefer to be in groups of their own kind. They feel more secure and less stressed when kept in larger groups, ideally six or more. Neon tetras are relatively calm and spend much of their time swimming in the middle levels of the aquarium. However, they can be somewhat sensitive to water quality changes and fluctuations, so maintaining stable water conditions is crucial for their well-being.

Both guppies and neon tetras are popular choices for beginners due to their relatively easy care requirements and striking appearances. They add color and movement to the aquarium and can coexist with other compatible fish species in a well-maintained community tank. Just be sure to provide suitable tank conditions, proper diet, and appropriate tank mates to ensure the health and happiness of your fish.

Can Guppies Live with Neon Tetras in the Same Aquarium?

So, can guppies live with neon tetras? Yes, guppies and neon tetras can generally live together in the same aquarium, but there are a few important considerations to keep in mind when mixing these two species:

  • Tank Size: Both guppies and neon tetras are relatively small fish, but they still require enough space to swim comfortably. A tank size of at least 10 to 20 gallons (40 to 75 liters) would be appropriate for a small community of these fish.
  • Water Parameters: Guppies and neon tetras have similar water parameter preferences. They both prefer slightly acidic to neutral water (pH around 6.5 to 7.5) and a temperature range of around 72-80°F (22-27°C). It’s important to maintain stable water conditions to keep both species healthy.
  • Tank Setup: Provide plenty of hiding spots and plants for both guppies and neon tetras. This will help create a more natural environment and give the fish places to retreat if they feel stressed.
  • Group Size: Both guppies and neon tetras are schooling fish, which means they are more comfortable and less stressed when kept in groups. Guppies should ideally be kept in groups of 3 or more, while neon tetras should be kept in groups of 6 or more.
  • Feeding: Both guppies and neon tetras are omnivores. Provide a varied diet that includes high-quality flakes, pellets, and occasional treats like frozen or live foods to ensure they receive proper nutrition.
  • Monitor Behavior: Always keep an eye on the interactions between the fish. If you notice any signs of aggression, fin nipping, or stress, you might need to rearrange the tank or consider different tank mates.

Remember that individual fish can have different personalities, and there’s always a certain level of unpredictability when mixing species. It’s a good idea to have a backup plan in case the compatibility isn’t working out, such as having a separate tank ready to house any fish that need to be removed for their own safety and well-being.

Can Guppies Live with Neon Tetras? - "File:Comunidad acuario.JPG" by El fosilmaníaco is licensed under CC BY 3.0.
Can Guppies Live with Neon Tetras? – “File:Comunidad acuario.JPG” by El fosilmaníaco is licensed under CC BY 3.0.

Tank Setup

Setting up an aquarium to accommodate both guppies and neon tetras requires careful consideration of their specific needs and preferences. Here’s a step-by-step guide on how to set up an ideal environment for both species:

  • Tank Size: Choose an appropriately sized aquarium. A tank with a capacity of at least 10 to 20 gallons (40 to 75 liters) would be suitable for a small community of guppies and neon tetras. Larger tanks provide more stable water conditions and ample swimming space.
  • Substrate: Use a fine-grained substrate like sand or small gravel. This will allow your guppies and neon tetras to comfortably sift through the substrate in search of food without injuring their delicate mouths.
  • Decorations and Plants: Create hiding spots and add decorations like rocks, driftwood, and caves. Adding live plants, such as java fern, Amazon sword, and anubias, will not only provide natural hiding places but also improve water quality by helping to control nitrates. Both species appreciate plants for shelter and security.
  • Water Parameters: Maintain stable water parameters that are suitable for both guppies and neon tetras. Aim for a pH level around 6.5 to 7.5, a water temperature between 72-80°F (22-27°C), and relatively soft to moderately hard water. Use a reliable heater and thermometer to regulate the temperature.
  • Filtration: Install a good-quality filtration system that is appropriate for the tank size. A gentle water flow is ideal for guppies and neon tetras, as strong currents can stress them. Make sure to perform regular water changes to maintain water quality.
  • Lighting: Provide moderate lighting to support plant growth and showcase the vibrant colors of your fish. You can use LED lights with adjustable intensity to create a natural day-night cycle.
  • Tank Mates: When choosing tank mates, consider peaceful community fish that share similar water requirements. Apart from guppies and neon tetras, other suitable options might include small Corydoras catfish, smaller rasboras, and peaceful shrimp.
  • Feeding: Offer a balanced diet that includes high-quality flake or pellet food, as well as occasional treats like frozen or live foods. Make sure the food is appropriate for both species and is of a suitable size.
  • Monitoring: Regularly observe the behavior of your fish. Look for any signs of aggression, stress, or health issues. If you notice any problems, make adjustments to the tank setup, water conditions, or fish population as needed.

By providing a well-planned and suitable environment for both guppies and neon tetras, you can create a harmonious community tank that showcases the beauty of these two species while ensuring their health and well-being.


In conclusion, while guppies and neon tetras can potentially coexist in the same aquarium, their successful companionship requires careful consideration and proper tank setup. Both species add vibrant colors and lively movement to a community tank, offering a visually appealing and dynamic aquatic display. With a suitable tank size, compatible water parameters, ample hiding spots, and diligent monitoring, aquarists can create a harmonious environment where guppies and neon tetras thrive side by side. Just remember that each fish has its own unique personality, so attentive observation and adjustments are essential to ensuring the well-being of both species in the shared aquatic habitat.

So, can guppies live with neon tetras? Absolutely.