Black Marsh Turtle (Siebenrockiella crassicollis), also known as the Siamese Black Turtle, is a small to medium-sized freshwater turtle characterized by its dark brown to black carapace and a broad, flattened head. Adults typically measure between 14–19 cm in shell length. The plastron (underside) is usually lighter in color, with dark blotches or patterns. Its strong limbs are well adapted for swimming and digging in soft, muddy environments. A notable feature is its thick neck and pointed snout, which it uses to probe for food in shallow waters.
Aggressive or Danger to Human? This species is not aggressive and poses no danger to humans. It is a shy and reclusive species, often retreating into the water or hiding under vegetation when disturbed.
Population Status: Endangered (EN) Globally (Source: IUCN Red List).
Habitat and Habits: This species inhabits slow-moving freshwater bodies such as marshes, ponds, swamps, rice fields, and small streams, often with dense aquatic vegetation. It is mainly nocturnal, spending the day buried in mud or under debris and emerging at night to forage. Its diet consists of aquatic plants, insects, mollusks, carrion, and other small invertebrates, making it an omnivore and an important scavenger in its ecosystem. The Black Marsh Turtle is primarily found in Southeast Asia, including Thailand, Cambodia, Malaysia, Indonesia, and parts of Myanmar. Habitat loss, pollution, and collection for the pet trade are major threats contributing to its endangered status.