Mardel Parashield by Fritz is a bioadhesive supplement that enhances and repairs natural slime coats on fish skin. Parashield utilizes a fresh, unique and thorough method of preventing problematic parasites from taking hold in your fish. Ich, velvet and a wide variety of other aquatic parasites are warded off by an enhanced slime coat developed by fish after being treated with this additive. Safe and effective natural oils and extracts work in combination with a patented film forming matrix, which bind to your fish and help in the building and replenishing of their slime coats, which are crucial to their health. Protect your fish from all kinds of unseen, parasitic threats with Parashield!