Endler Guppy Size: How Big Do They Get?

The Endler Guppy is a vibrant, small, freshwater fish species. Named after John Endler, the biologist who discovered them, they hail from Venezuela. They are popular additions to home aquariums due to their colorful appearance and ease of care.

endler guppy size

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What is the Average Size of Endler Guppy?

Typically, a male Endler’s guppy measures around 1 inch (2.54 centimeters) in length. When you look at female Endler’s guppies, they usually measure slightly larger with an average length of approximately 1.8 inches, this translates to roughly 4.6 centimeters.

These dimensions position the Endler guppy in the ranks of the smaller freshwater fish, making them ideal for aquarists who want to house multiple fish in smaller tanks – particularly those of you with less space.

Remember, these measurements represent averages rather than the absolute rule. In other words, some Endler guppies might slightly fall short of these standards or exceed them.

Ultimately, the size of an Endler guppy can be influenced by a variety of factors like vestiges and their genetic makeup. We’ll touch on this further in another upcoming section.

Undoubtedly, being aware of the average sizes for male and female Endler guppies will guide you in quite a number of ways.

From picking the right aquarium size to determining how many guppies you can appropriately house, your newfound understanding will seamlessly place you on the path to being a responsible and informed aquarist!

What is the Growth Rate of Endler Guppy?

If you’re an aquarium enthusiast with a keen interest in Endler guppies, one thing you’re likely to ponder is the growth rate of this particular fish species. Unlike other types of fish, Endler guppies have a fairly quick growth rate.

In most cases, these vibrant little fish reach two-thirds to full of their potential size within their first 3 months of life. If these figures pose any ambiguity, just remember that your male Endler guppies can pretty nimble, growing from mere fry to a full-size, 1-inch (2.5 centimeters) long fish in less than 90 days.

Female Endler guppies, on the other hand, do take a tad bit longer to reach the maximum size of 1.8 inches (4.5 centimeters). However, they typically meet their growth milestones within 4 to 6 months.

Here are a few key points to remember:

  • Endler guppies typically reach their potential size within 3 to 6 months.
  • Male Endler guppies usually grow quicker than their female counterparts.
  • Optimal conditions can positively influence the growth rate.

The growth rate of your Endler guppies can be dramatically influenced by factors such as the quality of food, the frequency of feeding, and the overall conditions of the aquarium. Providing your Endler guppies with proper care and an appropriate, balanced diet can greatly contribute to achieving a fast and healthy growth rate.

After all, watching the growth of these tiny swimmers from fry to full-grown fish is one of the fun parts of the wonderful hobby of fish keeping. Just remember, each tiny Endler guppy is a marvel of tropical marine life, full of life and bursting with color at full size.

Are There Size Differences Between Male and Female Endler Guppy?

Yes, there are distinct size differences between male and female Endler Guppy. On average, male Endler’s guppies reach about 1 inch (2.54 cm) in full length. Their smaller size makes them sleek, swift, and a sight to behold in your aquarium.

On the contrary, female Endler’s guppies grow larger than their male counterparts. Averagely, they attain about 1.8 inches (4.57 cm) in full length. This significant difference in size strikes a fascinating balance in the aquarium. Here’s a table summarising the size differences:

Endler’s Guppy Gender Average Size (Inches) Average Size (Centimetres)
Male 1 2.54
Female 1.8 4.57

Size variation between male and female guppies is not by coincidence. Rather, it is a product of natural selection over the years. Female guppies are larger to carry offspring, while the males are more petite to swiftly maneuver during mating.

Now, isn’t it intriguing how nature works? The difference in size creates a balanced and vibrant ecosystem in your aquarium. With this information, maintaining harmony in your fish tank should be a lot easier.

You can plan their feeding, mating, and overall management more effectively. In the end, understanding the quirks of the Endler Guppy helps ensure a well-adjusted and dynamic aquatic environment.

When do Endler Guppies Reach Full Size?

The growth rate of Endler Guppies depends on various conditions of care and nurturing. They usually reach their full size relatively quickly. Typically, male Endler Guppies reach their maximum length of approximately 1 inch (2.54 cm) by the time they are 3 to 4 months old, while females, which can grow larger, reach their maximum size of about 1.8 inches (4.57 cm) at around 4 to 6 months.

  • Around 3 to 4 months for males
  • Approximately 4 to 6 months for females

These timelines are influenced by factors such as dietary intake, water temperature, and the quality of the environment they are kept in. Providing them with a balanced diet and clean, warm water can accelerate their growth process.

Their growth rate is typically linear, which means they grow consistently until they reach their maximum size. However, it must be noted that the growth rate can slow down if they are kept in overcrowded conditions or under unsuitable water temperatures.

So, in essence, when your Endler Guppy will reach its full size will depend on the care and attention you provide. Ensure that your tiny swimmers are receiving adequate nutrition, clean and warm water, and plenty of room to roam around in order to ensure their healthy growth.

What Factors Influence the Size of Endler Guppy?

There are several factors that can vastly influence the size potentials of an Endler Guppy. These are mainly:

  • Genetics: Like all living creatures, genetics plays a pivotal role in determining how big an Endler Guppy will grow. If the parent guppies were of a larger size, it’s highly possible their offsprings will reach similar size potentials.
  • Diet: The type and quality of food also directly impacts the size and growth rate of these guppies. A well-balanced, nutrient-rich diet can contribute towards a healthier and bigger fish.
  • Tank Conditions: The habitat, specifically the tank size, water quality, and temperature also play a significant role. In a larger, cleaner tank with optimal conditions, the guppy is more likely to grow to its full potential.
  • Health: Any disease or health issue can [stunt] the growth rate of an Endler Guppy. Therefore, it’s important to observe for any unusual behavior or signs of disease in your guppy.

Though these factors influence the size, remember the maximum size that male and female Endler guppies usually achieve is 1 inch (around 2.5 cm) and 1.8 inches (about 4.5 cm) respectively.

Understanding these factors can help you plan a better care routine, ensuring your guppy grows healthily. Lastly, it’s crucial to respect its natural growth rate and size. By watching over these key factors, you can instill in your Endler Guppy a life that is not only long but also of great quality.

How do Endler Guppies Compare in Size with Other Species?

When measuring the size of the Endler’s guppy, it’s essential to compare it with other species.

Male Endler’s guppies are smaller, averaging around 1 inch (2.54 centimeters) in length. This size is typical for males in many livebearer species, indicating that Endler’s fall within the standard size range for this group.

Compared to common guppies, which can reach lengths of 2.4 inches (6.1 centimeters), male Endler’s guppies are noticeably smaller. This size difference is part and parcel of their distinct species characteristics.

The female Endler’s livebearers, on the other hand, grow up to approximately 1.8 inches (4.6 centimeters). This size is slightly smaller than the common female guppy, which reaches up to 2.4 inches (6.1 centimeters).

Here’s a quick comparison of Endler’s guppies with other species:

  • Male Endler’s: 1 inch (2.54 cm)
  • Female Endler’s: 1.8 inches (4.6 cm)
  • Male Common Guppy: 2.4 inches (6.1 cm)
  • Female Common Guppy: 2.4 inches (6.1 cm)

Given this comparison, we can clearly see that the Endler’s guppies are smaller in size. This characteristic not only differentiates them from other species but also highlights their need for less spacious habitats. However, don’t be misled by their smaller stature. These unique and vibrant creatures make up for it with their active behavior and vivacious coloration.

Remember, bigger isn’t always better. The Endler’s size is a perfect example of how diversity and variation within a species add to the intrigue and fascination within the world of aquariums.

So, when considering Endler’s for your home tank, this size comparison can act as a deciding factor. Knowing how big they’ll grow can help scale the tank accordingly to ensure your guppies thrive.

Now, shifting the lens to other live-bearing fish species, Endler’s stand out due to their compact size. In comparison to swordtails and platies, which average around 5 inches (12.7 centimeters), Endler’s guppies are significantly smaller.


By now, you should have a clear understanding of the size details of Endler Guppies. Whether male or female, these fish hold their own unique charm, regardless of their small size. We’d love to hear your thoughts, please leave a comment below.

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