They feed on invertebrates, small crustaceans, planktonic animals, daphnia, and frog tadpoles. The spiders prey on aquatic insects and crustaceans such as mosquito larvae and "Daphnia". Small pools of water hold the tiny "Daphnia", copepods and ostracods. "C. sowerbii" is a predator on zooplankton including daphnia and copepods. They have four main taxa in their diet&colon; calanoid copepods, cyclopoid copepods, daphnia, and leptodora. They feed largely on small insects such as mosquito larvae and crustaceans such as "Daphnia". Earlier stratification means earlier algal blooms, necessary food for zooplankton such as Daphnia. They may be conditioned for breeding with live foods such as brine shrimp and daphnia. " Daphnia" and other crustaceans make up a large portion of some gizzard shad diets. Aquatic toxicity to fish, daphnia and algae is low. Daphnia, a crustacean, swims by beating its antennae instead. "Hydra" mainly feed on aquatic invertebrates such as "Daphnia" and "Cyclops". Other aquatic fauna including "daphnia" and snails are also found in the lake. The water flea "Daphnia pulex" alternates between sexual and parthenogenetic reproduction. Often they are also given living shrimp and "Daphnia" as live prey.