Achaeus japonicus (Orangutan crab)


Small crab, the body is covered in fine red/brown hairs, hence the appropriate nickname. It has long legs and protruding eyes.


Unevaluated by the IUCN Red list due to its relatively recent discovery, but an uncommon species.


Not much is known yet about the spread of this species, but it is known from Indonesia. It can often be found on Bubble coral (Plerogyra sinuosa) or Torch coral (Euphyllia glabrescens).



The carapace is up to 2cm long.

Prey / Predation

It feeds on plankton.

Special features

It is also referred to as Oncinopus sp. but that identification is still tentative.