Sesarmid Crabs (Perisesarma spp.)

 

Sesarmid Crabs (Perisesarma sp.)

Two of them competing for a single leaf when there are many others around??
Think I saw Pink-fingered Vinegar Crabs (Episersama chengtongense) too

Reference:
tHE tiDE cHAsER: Sesarmid Crabs (Phylum Arthropoda: Family Sesarmidae) of Singapore