The automatic feeder can be used in any aquarium. Using the right mounting support, it can be fitted particularly simply and quickly to any aquarium. Batteries are not included. The volume of the adjustable feed container is designed for up to 60 feeds. The feed-in pellet form is ideal for use in automatic feeders. For environments with particularly high humidity, the automatic feeder is designed so that the drum can be ventilated using an ordinary air pump. The automatic feeder is supplied with batteries.