Will Guppies Eat Their Babies? - "Baby Guppies" by Falashad is licensed under CC BY 2.0.
Will Guppies Eat Their Babies? - "Baby Guppies" by Falashad is licensed under CC BY 2.0.


In the fascinating world of guppy breeding, a common question that consistently emerges is, “Will guppies eat their babies?” This query encapsulates one of the intriguing aspects of raising guppies, a freshwater fish species that captivates aquarists with its vibrant colors and lively demeanor. Guppies, known for their exquisite and varied appearances, are celebrated for their striking colors and lively personalities, yet the consideration of whether they will eat their fry within their own ranks is an ever-present consideration for those who seek to raise these captivating aquatic creatures. Understanding the dynamics of guppy reproduction and the potential for fry (baby guppies) to become a meal for their adult counterparts is crucial in the world of aquarium enthusiasts.

About Guppies

Guppies are small, colorful, and lively freshwater fish that are popular among aquarium enthusiasts and hobbyists. They are native to various regions of Central and South America, particularly Trinidad and Tobago. Guppies are known for their striking appearance and interesting behavior, making them a common choice for both beginners and experienced aquarists.


Guppies are perhaps most renowned for their vibrant and varied colors, which are a result of selective breeding by fishkeepers over many generations. They exhibit a broad spectrum of colors, including red, blue, yellow, orange, green, and even iridescent metallic hues. The colors can vary between individuals, and guppies often display intricate patterns and markings on their bodies, such as spots, stripes, or combinations of both. The males tend to be more colorful and ornate than the females, as they use their vibrant appearance to attract mates. Female guppies are typically more subdued in coloration, with a more practical, camouflaged appearance.

In terms of body shape, guppies are typically small fish, with elongated bodies that are somewhat torpedo-shaped. Their dorsal fins, located on their backs, are typically larger and more pronounced in males, often displaying intricate fin extensions and patterns. The females have smaller and more triangular dorsal fins. Guppies have a single, small anal fin located near their tail, and their caudal fin, or tail fin, can vary in shape, ranging from rounded to forked, depending on the strain or breed.


Guppies are known for their lively and active behavior, making them interesting to watch in an aquarium setting. Here are some key behavioral characteristics of guppies:

  • Schooling Behavior: Guppies are social fish that tend to thrive in groups. Guppies often display a schooling behavior, where they swim together in coordinated movements. Keeping them in groups of at least five or more is recommended to reduce stress and promote their natural behaviors.
  • Reproduction: Guppies are prolific breeders. Female guppies give birth to live young, rather than laying eggs. They are known for their ability to reproduce quickly, so it’s important to control their population if you want to avoid overcrowding in your aquarium.
  • Mating Dance: Male guppies exhibit a courtship behavior known as a “mating dance.” They will actively pursue females, showcasing their colorful fins and body patterns to attract a mate. If a female is receptive, she will mate with the displaying male.
  • Aggression: While guppies are generally peaceful, some territorial disputes can occur, especially among males. It’s important to provide plenty of hiding places and plants to create territorial boundaries and reduce aggression.
  • Exploratory Nature: Guppies are curious and will often investigate their environment. They may nibble on plants and explore all corners of the aquarium.
  • Feeding Behavior: Guppies are omnivorous and will readily accept a variety of foods, including flakes, pellets, frozen, and live foods. They are usually eager eaters and will often swim to the water’s surface to feed.

In summary, guppies are known for their striking colors and patterns, as well as their lively and social behavior. Their vibrant appearance and active nature make them a favorite among aquarium enthusiasts, whether for beginners or more experienced hobbyists.

Will Guppies Eat Their Babies

Will guppies eat their babies? Yes, guppies are known to exhibit this behavior, and in some cases, adult guppies may eat their own offspring. There are several reasons why this can happen:

  • Inadequate Hiding Places: If the aquarium lacks sufficient hiding places or plant cover for the fry (baby guppies), they are more vulnerable to predation by adult guppies. Guppies tend to seek out small, confined spaces to hide, and if these are not available, the fry become easy targets.
  • Stress and Aggression: Stress, overcrowding, or aggression among the adults can lead to increased aggression and predatory behavior. Stressed or overcrowded guppies may be more prone to preying on their own young.

To minimize the chances of adult guppies eating their fry, consider the following measures:

  • Provide Adequate Hiding Places: Ensure that the aquarium has plenty of hiding spots for the fry, such as dense plants or artificial decorations with small crevices where the fry can seek refuge.
  • Separate the Fry: If you’re concerned about the survival of guppy fry, you can move them to a separate nursery tank or breeding net. This provides a safe environment for the fry to grow without the threat of adult guppies.
  • Maintain Proper Tank Conditions: Keep the aquarium well-maintained with proper water parameters, including appropriate water quality and temperature, to reduce stress among the guppies.
  • Monitor Population Density: Be mindful of the number of guppies in your tank. Overpopulation can lead to stress and increased predatory behavior. Consider controlling the population through rehoming excess fish.

By taking these precautions and providing a suitable environment, you can help increase the chances of guppy fry surviving to maturity and reduce the risk of adult guppies preying on their offspring.

Will Guppies Eat Their Babies? - "Baby Guppies" by Falashad is licensed under CC BY 2.0.
Will Guppies Eat Their Babies? – “Baby Guppies” by Falashad is licensed under CC BY 2.0.

How To Protect the Babies in a Community Tank

Protecting guppy fry in a community tank can be a bit more challenging because the presence of adult guppies and other fish increases the risk of predation. However, there are several strategies and hiding places you can implement to help improve the survival rate of guppy fry in a community tank:

  • Plants: Plant the aquarium with dense, plants like Java moss, Java fern, or Hornwort. These plants provide hiding spots for fry and offer them protection from adults.
  • Moss Balls: Moss balls can serve as both a decorative element and a shelter for guppy fry. They are easy to maintain and provide hiding spaces.
  • Floating Plants: Floating plants like duckweed create shaded areas at the surface of the water, where guppy fry can hide from predators. These plants also help diffuse the light, which can reduce stress.
  • Hiding Structures: Use aquarium decorations or structures like PVC pipes, caves, or ceramic ornaments with small openings to provide hiding places for fry. Ensure that the openings are large enough for the fry to access but too small for the adults.
  • Breeding Grass or Mesh: Some aquarists use breeding grass or a fine mesh netting placed at the bottom of the tank to protect the fry. The fry can hide within the grass or mesh while adults have limited access.
  • Separate Breeding Tank: If you’re concerned about the survival of guppy fry, you can set up a separate breeding tank. This ensures the highest level of protection for the fry, as they are completely isolated from the adults.
  • Introduce Fry Gradually: If you keep the fry in a separate tank, then when the fry have grown large enough to avoid being eaten, you can gradually introduce them into the community tank. However, closely monitor their interactions.
  • Maintain Optimal Water Conditions: Keep water quality high and maintain stable water parameters to minimize stress among all the tank’s inhabitants, which can reduce aggression.

Remember that while these strategies can help protect guppy fry, not all fry will necessarily survive in a community tank, especially if it’s heavily stocked with predatory fish. If you want to ensure the highest survival rate for guppy fry, a separate breeding tank or net is often the most effective method.


In conclusion, guppies are colorful and lively freshwater fish that have captured the fascination of aquarium enthusiasts around the world. Their striking appearance, with a wide spectrum of vibrant colors and intricate patterns, makes them a sought-after addition to aquariums. Additionally, their active and social behavior adds to their allure.

One common question that often arises in the world of guppy keeping is, “Will guppies eat their babies?” Indeed, guppies, like many other fish, have been known to exhibit such behavior, and this question underscores the importance of creating a suitable environment for guppy fry.

To protect guppy fry from the potential threat of their own parents, or from other fish in a community tank, aquarists can employ various strategies. These include providing hiding places within the tank, using live plants, floating plants, or breeding grass, and carefully monitoring the interactions between adult guppies and their offspring. Some aquarists opt for a separate breeding tank or a breeding net, offering the highest level of protection.

In essence, while the question “Will guppies eat their babies?” underscores the natural behavior of these fish, it also highlights the responsibility of fishkeepers to create a safe and nurturing environment for the fry. With the right setup and care, guppy fry can flourish and grow into colorful adults, adding to the delight of any aquarium.