This kind of turtle is a popular pet species, and is not native to Connecticut. People often release them near ponds, which causes problems for native species, such as the painted turtle. Red-eared Sliders are aggressive and strong, and they compete with native species for habitat, food, and nesting sites.
The red-eared slider is a semiaquatic turtle belonging to the family Emydidae. It is a subspecies of pond slider. It is the most popular pet turtle in the United States and also popular in the rest of the world. It is native only to the southern United States, but has become established in other places because of pet releases and has become an invasive species in many introduced areas, like California, where it outcompetes the native western pond turtle.