How Big Do Slider Turtles Get



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How Big Do Slider Turtles Get

Slider turtles, also known as slider turtles or slider terrapins, are one of the most popular species of pet turtles. They are known for their vibrant colors, friendly demeanor, and relatively small size compared to other turtle species. If you’re considering getting a slider turtle as a pet, you might be wondering how big they can actually get.

The Different Types of Slider Turtles

Before discussing their size, it’s worth mentioning that there are two primary types of slider turtles:

  1. Red-eared sliders (Trachemys scripta elegans): These turtles are the most common pet turtle species and can be easily identified by the distinctive red mark on the sides of their head. They are native to the southern United States and northern Mexico.
  2. Cumberland sliders (Trachemys scripta troostii): These turtles are closely related to red-eared sliders but have a different habitat and appearance. They are native to the Cumberland River drainage in the eastern United States.
How Big Do Slider Turtles Get


The Size of Slider Turtles

Slider turtles start their lives as small hatchlings, but they can grow quite large over time. The size of a slider turtle depends on various factors, including genetics, diet, and habitat conditions.

On average, male slider turtles grow to be around 7-9 inches (18-23 cm) in shell length, while females can reach slightly larger sizes of 10-12 inches (25-30 cm) or more. However, some individuals can grow even bigger, especially if they are well cared for and have access to a spacious habitat with proper nutrition.

It’s important to note that reaching maximum size can take several years, as slider turtles grow slowly compared to some other turtle species. It’s not uncommon for slider turtles to continue growing throughout their lives, albeit at a slower rate as they get older.

How Big Do Slider Turtles Get


Factors Affecting the Size of Slider Turtles

Several factors can influence the growth and size of slider turtles:

  • Diet: Providing a balanced diet is crucial for the healthy growth of slider turtles. A diet consisting of both animal-based protein (such as insects, worms, and small fish) and plant matter (such as leafy greens, vegetables, and fruits) is essential to ensure proper nutrition.
  • Habitat: A spacious and well-maintained habitat is important for the overall well-being of slider turtles. It should include both land and water areas, UVB lighting, a basking spot, and clean water for swimming.
  • Genetics: The potential size of a slider turtle can also be influenced by their genetic background. Some individual turtles may have genes that allow them to grow slightly larger or smaller than average.


In conclusion, slider turtles are a popular choice for pet owners due to their small to medium size. While male slider turtles reach an average size of 7-9 inches, females can grow slightly larger. However, individual growth can vary depending on factors such as diet, habitat, and genetics. Providing proper care and a suitable environment will allow your slider turtle to thrive and reach its maximum size potential.

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