Aquarium fish net is safe for all fish. Fine nylon net lining is designed with their safety in mind. The multiple sizes of net is great for many different size fish and aquariums.blends in water to help catch those crafty, quick fish that make a hobby out of avoiding other nets that are easily seen in the water.The high-density net is great for cleaning out debris from the tank as well. You can easily skim the surface and remove light debris from the water.Durable construction means it will last for many years without bending or breaking. This versatile net is a must have for all home aquariumsQuantities: 3 pcs. Large: 5 inch diameter net, 10.25 inch long handle. Medium: 4 inch diameter net, 9.25 inch long handle. Small: 3 inch diameter net, 9 inch long handle