Aspidorhynchus acustirostris, Photo: Michael LahanasVidthayanon, C (2013). "Aaptosyax grypus". IUCN Red List of Threatened Species. 2013. Retrieved 27 December 2014.
"Aaptosyax grypus Rainboth, 1991". FishBase. 2011. Retrieved 16 April 2012.
"Genus Aaptosyax Rainboth 1991". FishWisePro. 1990. Retrieved 16 April 2020.
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