Black Marsh Turtle

The black marsh turtle, also known as the smiling terrapin or Siamese temple turtle, is a freshwater turtle endemic to Southeast Asia. It is one of two species in the genus Siebenrockiella, in the family Geoemydidae. Black marsh turtles are small to medium-sized turtles that are almost completely black except for white to yellow markings on the head (Wikipedia, general species account).