Categories: koi fish, koi diseases – Posted on February 3, 2022March 21, 2022 metronidazole for fish (for anaerobic bacteria) and anti-protozoal medication metronidazole for fish how to use metronidazole for fish (for treating anaerobic bacteria) and anti-protozoal medication Seachem MetroPlex Metronidazole Parasite Bacteria … Continue reading >metronidazole for fish (for anaerobic bacteria) and anti-protozoal medication