Is a plankankton a quinary consumer?

Plankton are not typically classified as quinary consumers; they primarily serve as primary producers (phytoplankton) or primary consumers (zooplankton) in aquatic food webs. Quinary consumers are higher-level predators, usually feeding on tertiary consumers, and are not commonly represented in plankton communities. Thus, while plankton play essential roles in their ecosystems, they do not fit the definition of quinary consumers.