Hatchlings are roughly 1 inch (2.5 cm) in length. After the first year, a hatchling, now referred to as a yearling, should be around 2-3.5" inches long. Male yearlings become sexually mature around 4 inches in length, females about 5 inches. The average length of an adult RES can vary between 7 to 12 inches. Adult males range between 7-9 inches (17.8 cm - 22.8 cm) while adult females fall between 10-12 inches (25 cm - 30.5 cm).Note: Size cannot reliably indicate age; however, captive turtles usually grow at a much faster rate. This is usually a result of overfeeding and a lack of hibernation periods. Overfeeding causes dangerous health (physical and intestinal) issues and captive RES do not need hibernation.
oldest I've seen is 19 but like most turtles with proper care can get to around 40
usually they live 20-30 years if you are taking them healthy. I only know one person who has there's to 20-30 others I know have only had there's to at least 2-3 years so try to keep yours alive to let it grow to full size
they can live anywhere from 10-40
No, red-eared sliders are not illegal in England.
yes, mini red eared sliders do exist
Yes, red eared sliders eat minnows in the wild and in captivity.
never
no
no
yes they can be separated because by nature, red eared sliders are solitary creatures.
no
humans
An adult generally weighs about 8.5 ounces. May vary due to gender.
Red-Eared Sliders are Semi-Aquatic turtles.
A Red Eared Slider can only "procreate" (have young) with another Red Eared Slider but they have been known to "mate" (have sex) with Yellow Belly Sliders. They probably wouldn't try to mate with any other kind of turtle, other than a Slider.