Ciprofloxacin for Fish (Fish Flox)
Quick answerCiprofloxacin is a fluoroquinolone that stops bacteria from copying their DNA. It is valued for strong activity against gram-negative bacteria, which cause many serious aquarium infections. Broad, with particularly strong gram-negative activity (including Aeromonas and Pseudomonas) and some gram-positive coverage.
What ciprofloxacin is commonly used for
- Aggressive fin rot and ulcers
- Columnaris-type infections
- Systemic gram-negative infections
- Cases that did not respond to penicillin-class drugs
Things to know
- Fluoroquinolones are powerful, broad-spectrum drugs, so they are best used deliberately rather than as a first guess.
- They do not treat parasites or fungi.
- Use a hospital tank and keep other animals and children away from the treatment.
How it compares with other options
Ciprofloxacin is one of several classes of antibiotic used by keepers. Our comparison guide lays out which class suits which problem, and our treatment packs combine complementary classes so you have a backup ready.
Products containing ciprofloxacin
Ciprofloxacin FAQ
Why is ciprofloxacin popular for fish?
Many of the bacteria behind fast-moving fish diseases are gram-negative, and ciprofloxacin is strong against them.
Is Fish Flox the same as Cipro?
Fish Flox contains ciprofloxacin, the same active ingredient as the human drug, but it is sold for ornamental aquarium fish only.
Responsible use. For ornamental aquarium fish only. Not for human use or fish intended for food. Follow the label and consult a veterinarian when unsure.