Prayidae is a family of marine in the order Siphonophorae. They are colonial, and the colonies can superficially resemble jellyfish; although they appear to be a single organism, each specimen is actually a colony of Siphonophora.
The family contains the following subfamilies and genera:
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Subfamily Amphicaryoninae Chun, 1888
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Subfamily Nectopyramidinae Bigelow, 1911
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Subfamily Prayinae Chun, 1885
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Genus Craseoa Pugh & Harbison, 1987
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Genus Desmophyes Ernst Haeckel, 1888
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Genus Gymnopraia Haddock, Dunn & Pugh, 2005
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Genus Lilyopsis Chun, 1885
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Genus Mistoprayina Pugh & Harbison, 1987
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Genus Praya Quoy & Gaimard, in de Blainville, 1834
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Genus Prayola Carré, C. 1969
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Genus Rosacea Quoy & Gaimard, 1827
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Genus Stephanophyes Chun, 1888