Fish Doxy – Broad-Spectrum Aquarium Antibiotic

Fish Doxy (Doxycycline) is a broad-spectrum aquarium antibiotic formulated to treat bacterial and internal infections in both freshwater and saltwater fish. It’s especially effective against gill disease, fin rot, and mycobacteriosis, helping fish regain strength and vitality quickly.
Each capsule contains pharmaceutical-grade Doxycycline, ensuring safe use and reliable results. Trusted by aquarists and breeders across the U.S., Fish Doxy is an essential treatment for maintaining a clean, healthy, and balanced aquarium environment.

For aquarium use only. Follow recommended dosing instructions and perform partial water changes between treatments.