Austruca annulipes is a species of fiddler crab found along the coastline from South Africa to Somalia, Madagascar, India, China, Indonesia, Malaysia, and the Philippines.

[2][3][1] They are relatively small crabs, and can be seen feeding in the evening at low tide.

The males and females differ in size and appearance: the larger males are endowed with a brightly colored front claw.

Compared to the females (and even the smaller male Uca annulipes crabs), the male Austruca annulipes crabs spend the most time excavating their burrows.

[4] House crows are known to prey upon these crabs, which are quick to hide in their burrows at the slightest hint of danger.