# Ciprofloxacin for Fish (Fish Flox)

> Ciprofloxacin 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.

Source: https://petremedyusa.com/medications/ciprofloxacin-for-fish/ · PetRemedyUSA

## 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.

## Products

- [Fish Flox 500mg 100-Tablets](https://petremedyusa.com/products/fish-flox-500mg-100-tablets/): from $87.99
- [Fish Flox 500mg 30-Tablets](https://petremedyusa.com/products/fish-flox-500mg-30-tablets/): from $55.99
- [Fish Flox 250mg 100-Capsules](https://petremedyusa.com/products/fish-flox-250mg-100-capsules/): from $59.99
- [Fish Flox 500 - 60 Capsules](https://petremedyusa.com/products/fix-flox-500-60-capsules/): from $75.91

## Frequently asked questions

### 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.