Infusoria are a group of aquatic organisms that are used to feed fish larvae. They are actually small forms of life in freshwater that include: Amoeba, Oglena, Green algae, Paramecium, Rotifer, Vertisella, and Invertebrates are small. Due to its small size, Infusoria can be used to breed newly hatched larvae of many aquarium fish species such as gourami and beta fish. Many home aquarium owners ...