See text Craticula is a genus of diatom that lies on or in the top layers of sediments in the freshwater to brackish water environments it inhabits.

[1][2][3] In addition to frustule morphology the genus differs from closely related species by its sexual reproduction and movement in response to light.

[2][3][4] According to Algaebase,[5] there are 62 species names and 12 intraspecific names:

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