Aquatop Aquatic Supplies offers its line of Aquarium Fish Nets. They use a patent-pending flexible net and handle connection that allows the net to retain memory and bend back into place, the company states. They can be used for removing debris, such as uneaten fish food, and skimming the surface of the aquarium. They have a corrosion-resistant PVC coating for a long life, while a ridged handle and net frame offer added strength, according to the manufacturer. They are designed for freshwater and saltwater aquarium use and range in size from 3 in. to 12 in.