The food chain is shown. Algae is a producer by the early Water flea Daphnia magna, or consumers will be the next phase, which will eat algae for food. After that, the next consumer would eat the food that consumers Water flea order to Daphnia magna, which normally would feed them small organic. Include protozoa, bacteria, single-celled algae. Feed by the current reverb send food into the mouth. Then filter food The current culture of Daphnia magna are commonly used single-cell algae.