1. Daphnia , a crustacean, swims by beating its antennae instead.2. Often they are also given living shrimp and daphnia as live prey. 3. See Daphnia # Reproduction which exhibits flexibility in reproduction. 4. Female Daphnia longispina carrying a resting egg ( = " ephippium " ). 5. Schematic representation of cyclic parthenogenesis in the cladoceran Daphnia ( water flea ). 6. The adult stages will also select for larger " Daphnia " and zooplankton. 7. They feed on invertebrates, small crustaceans, planktonic animals, daphnia , and frog tadpoles. 8. Diet should be bloodworm or daphnia . 9. "Daphnia magna " has been subject of biological research since the 18th century. 10. Daphnia ) exhibit diel vertical migration.