See text Aristocleidus is a genus of monogeneans erected by Justus F. Mueller in 1936.

[1] The genus has been revised by Delane C. Kritsky and Edgar F. Mendoza–Franco in 2008.

[2] The amended generic diagnosis is: species with gonads overlapping, ventral anchors with deeply incised base forming deep and superficial roots, a coiled tube of the male copulatory organ (nonarticulated with the accessory piece) in a clockwise orientation, and haptoral hooks with upright acute thumb, slender shank comprising one subunit and FH loop.

[2][3] Two new species, parasitic in the Mexican mojarra Eugerres mexicanus (Perciformes, Gerreidae) from southwestern Mexico have been described by Edgar F. Mendoza-Franco, Marina Tapia Osorio and Juan Manuel Caspeta-Mandujano in 2015.

[3]