''Campichthys tricarinatus'' (three-keel pipefish) is a species of marine fish of the family

Syngnathidae The Syngnathidae is a family of fish which includes seahorses, pipefishes, and seadragons (''Phycodurus'' and ''Phyllopteryx''). The name is derived from grc, σύν (), meaning "together", and (), meaning "jaw". The fused jaw is one of the tra ...

. It is found in the western central Pacific Ocean, from Montebello Island (Western Australia) to Cape York (Queensland), and specimens have been recorded around the Northern Mariana and

Marshall Islands The Marshall Islands ( mh, Ṃajeḷ), officially the Republic of the Marshall Islands ( mh, Aolepān Aorōkin Ṃajeḷ),'' () is an independent island country and microstate near the Equator in the Pacific Ocean, slightly west of the Internati ...

. It is found at depths of , and can grow to lengths of . This species is

ovoviviparous Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop insi ...

, with males carrying eggs in a brood pouch until giving birth to live young.

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