The Peimatherimi Crab (Fredius platyacanthus) is a crustacean in the Pseudothelphusidae family of freshwater crabs.
The Peimatherimi Crab has a shield-shaped bluish-yellow exo-skeleton (shell) called a carapace. The carapace is covered in spines called tubercles. It has 10 orange-blue legs.
Its body grows to about 10 centimetres (4 inches) wide. Its legs are about 30 centimetres (12 inches) long.
It is found in Central America, mainly in Brazil. It prefers rain forest mountain streams.
It is nocturnal, active mainly at night. It is carnivorous, eating fish.
The PeimatherimiCrab walks sideways.
The female lays eggs that hatch after about 25 days. They hatch into larvae that develop into adult crabs.
Location of photograph: Natural History Museum, Paris
Photographer: Martina Nicolls
Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM