Fish pen | Trusted fish Antibiotics

Keep your fish friends swimmingly happy and healthy with Fish Pen Penicillin, a trusted choice in fish antibiotics designed to treat common bacterial infections in ornamental and aquarium fish.

Fish Pen 500mg is a broad-spectrum antibiotic formulated to help combat bacterial diseases such as fin rot, tail rot, and columnaris. Each capsule contains 500mg of Penicillin, providing powerful antibacterial protection to restore and maintain fish health.

Available in 60-count and 30-count bottles, Fish Pen (Penicillin) offers flexible treatment options for aquarists with single or multiple tanks. Its reliable, fast-acting formula supports recovery in both freshwater and saltwater environments , helping your fish recover, thrive, and stay vibrant.