Rare ‘Chao Fa Crab’ spotted in Kaeng Krachan National Park, highlighting Thailand’s wildlife richness

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A rare glimpse of the elusive Chao Fa Crab (Phricotelphusa sirindhorn) was captured in Kaeng Krachan National Park, reinforcing the park’s status as a haven for biodiversity and the importance of preserving Thailand’s fragile ecosystems.

PETCHBURI, Thailand – A rare sighting of the Chao Fa Crab, or Phricotelphusa sirindhorn, has been confirmed in Kaeng Krachan National Park, as captured in a recent photograph released by Mongkol Chaipakdee, the park’s Chief. Known for its distinctive appearance and elusive nature, the crab is seldom seen in the wild.



Also referred to as the Panda Crab, Phricotelphusa sirindhorn is easily recognized by its striking white carapace and claws, which contrast with its dark purple-black legs. The species was named in honor of Her Royal Highness Princess Maha Chakri Sirindhorn for her dedication to environmental conservation. It was first discovered at Ngao Waterfall National Park in Ranong province and has since been found in other cool, forested mountain streams.

Kaeng Krachan National Park, a UNESCO Natural World Heritage Site, has recorded previous sightings of the species, including around Khao Phanoen Thung waterfall in Phetchaburi province. These crabs typically live in shaded, freshwater streams at elevations of about 100 meters, often sheltering under rocks.


The latest photograph was taken in one of the park’s most biologically diverse areas, confirming Kaeng Krachan’s reputation as a center of wildlife richness. Officials attribute the rare documentation to both good timing and routine monitoring efforts by rangers and conservation staff.

The Chao Fa Crab is classified as a protected species under Thailand’s Wildlife Preservation and Protection Act. Its continued presence in the park underscores the importance of habitat conservation and the protection of rare wildlife across the country. (NNT)