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Simocephalus serrulatus
Simocephalus serrulatus is a freshwater cladoceran crustacean in the family Daphniidae. It is a cosmopolitan zooplankton species found across multiple continents including Australasian, Afrotropical, Nearctic, and Neotropical regions. The species has been used in ecotoxicological studies, particularly research on per- and polyfluoroalkyl substances (PFAS) tolerance and population-level variation in life history traits.