How to Take Care of Guppy Fry - "11/29/13" by max_wei is licensed under CC BY-ND 2.0.
How to Take Care of Guppy Fry - "11/29/13" by max_wei is licensed under CC BY-ND 2.0.

Are you ready to embark on the journey of raising guppy fry? These tiny, colorful aquatic wonders require specific care to thrive and grow into healthy adult fish. In this guide, we will explore the essentials of how to take care of guppy fry, from providing a suitable tank setup to ensuring their nutritional needs are met. Let’s dive into the world of guppy fry care and discover the joy of witnessing their development and vibrant colors unfold before your eyes.

How To Take Care of Guppy Fry the Best Way

Taking care of guppy fry (baby guppies) requires attention to their specific needs to ensure their healthy growth and survival. Here are some guidelines to help you on how to take care of guppy fry:

  1. Separation: Once the female guppy gives birth, it’s important to separate the fry from adult fish to prevent them from being eaten. You can use a breeding box, a separate tank, or a netted area within the main tank to keep the fry safe.
  2. Suitable tank setup: Provide a well-maintained and adequately-sized tank for the fry. A small aquarium or a breeding box will suffice initially, but as they grow, you may need to transfer them to a larger tank. Ensure that the tank has a lid or cover to prevent the fry from jumping out.
  3. Water parameters: Maintain good water quality by regularly monitoring and adjusting the temperature, pH, ammonia, nitrite, and nitrate levels. Ideal water conditions for guppy fry include a temperature between 74-82°F (23-28°C) and a slightly alkaline pH of 7.0-7.5.
  4. Feeding: So, what do guppy fry eat? Guppy fry should be fed with small, nutritious meals multiple times a day. Start by providing them with commercial fry food specifically formulated for their needs. You can also supplement their diet with crushed flakes or powdered fish food. As they grow, you can introduce baby brine shrimp or microworms.
  5. Maintenance: Perform regular water changes to keep the tank clean and maintain water quality. However, be cautious while performing water changes not to harm or suck up any fry.
  6. Observe growth and behavior: Monitor the fry’s growth and behavior regularly. Healthy fry will be active, after a time have vibrant colors, and show steady growth. If you notice any signs of illness, separate the affected fry and seek appropriate treatment or advice from an experienced aquarist.
  7. Gradual acclimation: When the fry reach a suitable size and are well-developed, you can gradually acclimate them to the main aquarium with adult fish. Introduce them slowly, ensuring that they are not bullied or stressed by larger fish.

Remember, guppies are prolific breeders, so it’s essential to plan for the number of fry you may end up with. Having a plan for housing or finding new homes for them will help prevent overcrowding in your tanks.

It’s worth noting that how to take care of guppy fry can vary slightly depending on the specific circumstances and any underlying genetic factors. Therefore, it’s always beneficial to gather information from reputable sources and seek advice from experienced guppy breeders or aquarium enthusiasts.

How to Take Care of Guppy Fry - "11/29/13" by max_wei is licensed under CC BY-ND 2.0.
How to Take Care of Guppy Fry – “11/29/13” by max_wei is licensed under CC BY-ND 2.0.

Tank Setup

Setting up an aquarium for guppy fry requires careful consideration of their specific needs. Here’s a step-by-step guide to help you set up an ideal environment for guppy fry:

  1. Select an appropriate tank: Choose a small-sized aquarium or a dedicated breeding box to house the fry initially. A 10-gallon (40 liter) tank or larger should provide enough space for their growth to begin with.
  2. Heating and lighting: Install a reliable aquarium heater to maintain a stable temperature between 74-82°F (23-28°C), which is suitable for guppy fry. Additionally, provide gentle lighting using a low-wattage aquarium light or natural ambient light. Avoid bright lights, as they may cause stress to the fry.
  3. Filtration: A gentle and adjustable filtration system is essential to maintain good water quality. Guppy fry are delicate and can get sucked into strong filters, so consider using sponge filters, air-driven filters, or pre-filter sponge attachments to protect them.
  4. Substrate and hiding places: Use a fine-grained substrate or fine mesh to line the bottom of the tank. This helps prevent the fry from getting trapped or injured. Adding live or artificial plants, floating plants, or spawning mops provides hiding places for the fry and encourages natural behavior.
  5. Water quality: Guppy fry are sensitive to poor water conditions, so it’s important to establish a stable and clean environment. Optionally perform regular water tests to monitor temperature, pH levels (aim for a slightly alkaline range of 7.0-7.5), and ammonia, nitrite, and nitrate levels. Keep the water parameters within acceptable ranges and perform regular water changes to maintain water quality.
  6. Introduce beneficial bacteria: To establish a healthy biological filter, you can add beneficial bacteria supplements or use established filter media from an existing aquarium. This helps maintain a stable cycle and reduces ammonia and nitrite levels.
  7. Add a sponge or air-driven filter: A sponge or air-driven filter provides gentle water flow while also serving as a surface for beneficial bacteria to grow. This type of filter helps maintain water quality without posing a risk to the delicate fry.
  8. Introduce the fry: Once the fry are born, transfer them to the dedicated breeding box or small tank. Ensure that the water parameters in the breeding tank are similar to the main tank to minimize stress during the transfer.

Remember to monitor the fry closely, maintain good water quality, and provide them with appropriate food and care as they grow. Regular observation and adjustments to the setup will ensure the fry’s health and well-being.


In conclusion, taking care of guppy fry can be a rewarding and fulfilling experience for any aquarium enthusiast. By providing a nurturing environment, monitoring water quality, and offering appropriate nutrition, you can ensure the healthy growth and development of these vibrant little fish. Remember to separate the fry from adult fish, maintain suitable tank conditions, and feed them small, frequent meals to support their growth. As they mature, you can gradually introduce them to the main aquarium, allowing them to flourish among their colorful counterparts. With patience, observation, and proper care, you’ll witness the guppy fry transform into stunning adult guppies, a testament to your dedication as a responsible fish keeper. Enjoy the journey of raising guppy fry and the beauty they bring to your aquatic world.