The many-spotted pipefish is widespread throughout the tropical waters of the central Indo-Pacific region, from Indonesia to the Philippines. It occurs mainly in shallow rubble lagoons among algae and seagrasses, it is frequently recorded in the intertidal zone, and is normally found in only a few metres depth. Like other pipefish this species is ovoviviparous and the male bears the fertilised eggs in a brood pouch located under his tail 
The many-spotted pipefish is a small fish and can reach a maximum total length of 16 centimetres (6.3 in) length.
- Gillespie, K.; Pollom, R. (2016). "Corythoichthys polynotatus (errata version published in 2017)". The IUCN Red List of Threatened Species. 2016: e.T65365107A115417187. doi:10.2305/IUCN.UK.2016-3.RLTS.T65365107A67619420.en.
- "Corythoichthys polynotatus Common names Yellow-spotted Pipefish". Encyclopedia of Life. Retrieved 27 May 2018.
- Froese, Rainer and Pauly, Daniel, eds. (2018). "Corythoichthys polynotatus" in FishBase. February 2018 version.
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