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 device moisture-proof is improved, even if the aquarium water vapor evaporates, the freshness and dryness of fish food will be greatly prolonged. Dispenser discharge port 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 strip feed, etc. You can choose a suitable feeding tank according to the feeding amount of the aquarium, avoid frequent feeding, avoid food accumulation and moisture. The fish feeder fixed clip fixed is suitable for open aquariums, and the fixed fish feeder Velcro is suitable for closed aquariums. The fixing clip can also be used to fix the water pipe.