crustaceans decomposers

Are Crustaceans Consumers? Ducks, tadpoles, mayfly nymphs, and small crustaceans are all considered primary consumers. The most populous of the primary consumers are the zooplankton. These tiny animal-like organisms consume phytoplankton in large quantities. Is a crustaceans a producer? In addition to their crucial roles as consumers and secondary producers in natural aquatic ecosystems, some