The aquarium fish tank automatic feeder can be set to feed steadily and quantitatively, so that you can go out at ease without worrying about anyone feeding. The moisture-proof device is improved, even if the water vapor in the aquarium evaporates, the freshness and dryness of fish food will be greatly prolonged. The discharge hole of the automatic fish feeder can be adjusted and is suitable for placing a variety of fish feed, such as pellet feed, particle feed, flake feed, small feed.bands, etc. You can choose a suitable feeding tank according to the feeding amount of the aquarium, avoid frequent feeding, avoid food accumulation and moisture. This model is powered by 2 AA batteries, but the batteriesare not included in this product. The fixed clip fixed fish feeder is suitable for open aquariums, and the Velcro fixed fish feeder is suitable for closed aquariums. The fixing clip can also be used to fix the water pipe.