How Big Do Red Eared Slider Turtles Grow?

Most people have seen red-eared slider turtles in pet shops, children’s books, and perhaps even in their own backyard ponds. But how big do these turtles actually get? If you’re thinking of getting a red-eared slider turtle as a pet, it’s important to understand how big they can grow. In this article, we’ll look at the average size of a red-eared slider turtle, as well as the factors that contribute to their growth. So, let’s get started and learn more about how big red-eared slider turtles can get!

How Big Do Red Eared Slider Turtles Grow?

How Big Do Red Eared Slider Turtles Grow?

Red-eared slider turtles are one of the most popular pet turtles in the world. They are known for their striking red markings on their heads and for their long life spans. But how big do these turtles get?

Red-eared sliders are commonly sold as juveniles, and they can grow up to 12 inches in length. However, they can also grow up to 18 inches in length in the wild. Females tend to be larger than males, and they can also grow to be twice as large as males.

Factors Affecting Red Ear Slider Turtle Growth

There are several factors that can affect the growth of red-eared slider turtles. These include diet, environment, and genetics.

Diet: A healthy diet is essential for a red-eared slider turtle to reach its full potential size. These turtles should be fed a high-quality diet of fresh fruits and vegetables, as well as commercial turtle food.

Environment: Red-eared slider turtles need to be kept in an environment that is suitable for their size. They should have a large enough tank to swim in, but not so large that they feel lost. They should also have plenty of places to hide, such as rocks or logs.

Genetics: Genetics play a role in how big a red-eared slider turtle will grow. Some turtles may be predisposed to be larger than others, and this is something that cannot be changed.

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Average Red Ear Slider Turtle Lifespan

The average lifespan of a red-eared slider turtle is between 20 and 30 years. Some have been known to live much longer, and some have even been known to live up to 50 years.

Common Health Problems in Red Ear Slider Turtles

Red-eared slider turtles are prone to several common health problems, including respiratory infections, shell rot, and eye infections.

Respiratory Infections: Respiratory infections are caused by bacteria and can be life-threatening if not treated. Symptoms include coughing, sneezing, and difficulty breathing.

Shell Rot: Shell rot is caused by a fungus that can attack the turtle’s shell. Symptoms include a soft, sponge-like shell, foul-smelling discharge, and white patches on the shell.

Eye Infections: Eye infections can be caused by bacteria or a fungus, and they can cause the turtle to have cloudy eyes and swollen eyelids.

Red Ear Slider Turtle Care

Red-eared slider turtles are relatively low-maintenance pets, but they do require some special care.

Tank: Red-eared slider turtles need to be kept in a tank that is large enough for them to swim. The tank should also be equipped with a filter and a heating system.

Diet: Red-eared slider turtles should be fed a balanced diet of commercial turtle food, fresh fruits, and vegetables.

Water: The water in the tank should be changed regularly to keep it clean and free of bacteria.

Temperature: The tank should be kept at a consistent temperature between 75 and 85 degrees Fahrenheit.

Signs of a Healthy Red Ear Slider Turtle

A healthy red-eared slider turtle will have bright eyes, a clean shell, and smooth skin. They will also be active and alert.

Signs of a Sick Red Ear Slider Turtle

Signs of a sick red-eared slider turtle include cloudy eyes, swollen eyes, a soft shell, and lethargy. They may also have difficulty breathing, have a loss of appetite, or have a foul-smelling discharge.

Cleaning Red Ear Slider Turtle Tank

Cleaning the tank is essential to the health of the turtle. The tank should be cleaned every two weeks with a mild detergent, and the filter should be changed once a month. The water should also be changed every two weeks.

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Red Ear Slider Turtle Enrichment

Red-eared slider turtles need enrichment in their environment. They should have plenty of places to hide, such as rocks and logs, as well as plenty of toys to keep them entertained.


Red-eared slider turtles are a popular pet, and they can grow to be quite large. They require a special diet and environment to reach their full potential size, and they should be kept in an environment with plenty of enrichment. They are also prone to several common health problems, so it is important to be aware of the signs of a sick turtle. With proper care, red-eared sliders can live up to 30 years or more.

Related Faq

How Big Do Red Eared Slider Turtles Grow?

Answer: Red Eared Slider Turtles are one of the largest aquatic turtle species in the world, and they can grow to be quite large. On average, when fully grown, they can reach lengths of 10 to 12 inches, although some specimens have been known to reach lengths of up to 15 inches.

In terms of weight, these turtles can reach 2 to 5 pounds in weight, and they can live for up to 25 years in captivity. The size of the turtle will depend on the environment they are kept in and the diet they are given, as both of these factors can affect a turtle’s growth rate.

How Big Do Red Eared Slider Turtles Grow? 2

How Big Red Eared Sliders Actually Get

Red-eared slider turtles are a popular pet choice for reptile owners around the world. With proper care and nutrition, these turtles can grow up to 12 inches in length, making them a great addition to any turtle enthusiast’s collection. With the right habitat and environment, these turtles can live for up to 30 years, making them a long-term companion. With the right care, these turtles can make a wonderful pet that can bring joy and entertainment to any home.

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