Chydoridae Stebbing, 1902
Chydorus angustirostris Frey, 1987
Chydorus arcticus Roen, 1987
Chydorus bicollaris Frey, 1982
Chydorus bicornutus Doolittle, 1909
Chydorus biovatus Frey, 1985
Chydorus brevilabris Frey, 1980
Chydorus canadensis Chengalath & Hann, 1981
Chydorus clelandi Henry, 1919
Chydorus eurynotus Sars, 1901
Chydorus faviformis Birge, 1893
Chydorus gibbus G. O. Sars, 1891
Chydorus herrmanni Brehm, 1933
Chydorus invaginatus Frey, 1982
Chydorus latus Sars, 1862
Chydorus linguilabris Frey, 1982
Chydorus obscurirostris Frey, 1987
Chydorus opacus Frey, 1987
Chydorus ovalis Kurz, 1874
Chydorus parvireticulatus Frey, 1987
Chydorus pizarri Alonso, 1988
Chydorus reticulatus Daday, 1898
Chydorus sinensis Frey, 1987
Chydorus sphaericus (O. F. Mueller, 1785)
Chydorus tasekberae Frey, 1987
