Mauremys sinensis, former Ocadia sinensis. An exotic / invader species for the portuguese territory.
Some creatures, like these beautiful turtles, are abandoned in the wild by humans who don't know the implications of such an act like this. With no predators to control exotic populations there is a real danger of losing other autochthonous / endemic species. This turtles feed themselves a lit bit like humans do... eating fruit, small crustacean, larvae, insects, grass... a lit bit of everything, putting in danger the survival of groups of other animals, that can't compete with that pressure. The specimen on the photo is a fully grown adult. This species can endure for more than 40 years...
The pressure for survival of an endangered species...
The Chinese stripe-necked turtle or golden thread turtle, is a species of turtle in the Geoemydidae family.
Like many other Geoemydidae, this species hybridizes vigorously with related and not-so-closely related members of its family.
It is one of the two most commonly found species used for divination that have been recovered from Shang dynasty sites.