Fish Flox - Fish Ciprofloxacin 500mg - 30ctFishbiotic Ciprofloxacin is available in 30ct tablets. Each tablet contains 500mg of Pharmaceutical Grade Ciprofloxacin. Fishbiotic (Fish Ciprofloxacin) is a synthetic broad spectrum antibiotic that is effective against gram negative and some gram positive bacterial pathogens of fish, including aeromonads, flexibacteria, and vibrios. This fish antibiotic is useful for control of some common bacterial diseases in fish, including columnaris infections