An animal that feeds on small organisms is referred to as a "microphage." Microphages primarily consume microscopic organisms, such as plankton, algae, or small invertebrates. This feeding strategy is common in various aquatic and terrestrial ecosystems, where these animals play a crucial role in nutrient cycling and ecosystem dynamics. Examples include certain species of fish, crustaceans, and filter-feeding organisms that sift through water or soil to extract their food. Their feeding habits can have significant impacts on food webs, influencing population dynamics and the overall health of their habitats.