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 are naturally unable to provide enough infusoria to raise fish larvae. Infusoria can be grown by soaking any decomposing vegetative material such as lettuce and cabbage in an old, chlorinated, glassless water bottle. Depending on the temperature and light received, the infusoria begin to multiply within two to three days after planting. The water is initially cloudy due to the increase in the level of bacteria, but when the infusoria consume them, the water becomes clear. At this stage, infusoria are usually visible to the naked eye as small, white moving spots.