The Halimeda Ghostpipefish has a very large head compared with the body size. The species occurs throughout the tropical Indo-West Pacific.
The head of a Halimeda Ghostpipefish is almost equal to the length of the body. The species has a small caudal fin, which is similar in size and shape to the first dorsal and ventral fins. The caudal peduncle is 2 to 3 times as long as it is high. The species is highly variable in colour (from bright green or red to white) and is sometimes covered with fine filaments that give the fish a 'hairy' appearance.
This benthic species occurs in inshore areas and coral reefs. It is sometimes found living in association with fine filamentous orange-coloured or bright green algae, at depths between 15 m and 30 m.
The species occurs widely throughout the tropical Indo-West Pacific.
Unlike seahorses, ghostpipefishes do not have a pouch in which the young are reared, instead a female ghostpipefish (rather than the male seahorse) looks after the eggs in a pouch formed by her modified pelvic fins. These fins are greatly expanded and united with the abdomen along the upper margin and together below, to form a brood pouch.
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