[2] Solenostomus halimeda can reach a length of 6.5 cm (2.6 in),[3] and is the smallest of the ghost pipefishes.

These fish float nearly motionless, with their mouths facing downwards, around a background that makes them nearly impossible to see.

Unlike true pipefish, female Halimeda ghost pipefish carry their fertilised eggs between their pelvic fins, which are modified to form a brood pouch, until the eggs are ready to hatch.

[4] This species lives in the Indian Ocean and in the Western Indo-Pacific, from the Maldives to the Marshall Islands.

The Halimeda ghost pipefish is reef-associated and lives at depths up to 23 m (75 ft).