Cosmocampus darrosanus (D’Arros pipefish or whiteface pipefish) is a species of marine fish of the family Syngnathidae.

It is found in the Western Indian Ocean, Sri Lanka, Indonesia, Guam, and the Great Barrier Reef (Australia).

[1] It lives in tidepools and coral reefs to depths of 3 metres (9.8 ft), where it can grow to lengths of 7.4 centimetres (2.9 in).

This species is ovoviviparous, with males carrying eggs before giving birth to live young.

This Syngnathiformes-related article is a stub.