Ciprofloxacin Fish Antibiotics

Fish Flox is a broad-spectrum antibiotic effective against gram-negative and certain gram-positive bacteria in fish. Fish Flox is a fluoroquinolone antibiotic used to treat fin rot, black patch necrosis syndrome, and other infections. The antibiotic is sometimes given off-label to cats and dogs.

Fish Flox, a broad-spectrum antibiotic, treats fin rot, skin ulcers, system disease, and other infections in fish to improve overall health and improve activity levels. It is also effective against gastroenteritis, respiratory infections, urinary tract infections, ear infections, and other conditions in cats and dogs.

Benefits of Fish Flox:

  • Treats E. coli, Staphylococcus, Shigella, Salmonella, Proteus, Camphylobacter, and other infections in cats and dogs
  • Treats a single fish or a tankful
  • Improves health and activity level
  • Does not typically cause severe side effects
  • Works against aeromonads, virbrios, flexibacteria, and other gram-positive pathogens
  • Effective against gram-negative and some gram-positive bacteria

For use in fish only. Not for human use. Do not allow children to handle or administer Fish Flox.

Read manufacturer-provided information and precautionary statements prior to use.

Give dogs and cats 4.5 to 9 mg per pound of body weight once daily or as prescribed by your veterinarian.


  1. Dissolve one 250 mg tablet per gallon of water in a cup of water prior to adding to a hospital tank.
  2. Pour the antibiotic solution into the hospital tank, and then immerse your fish for one hour.
  3. Perform a water change after each treatment.
  4. Repeat dosing every day for 5 to 7 days, or as prescribed by your veterinarian.

Frequency of Use:

Use once each day for at least 5 days.


Store Fish Flox at controlled room temperature, between 59 and 86 degrees F.

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling.

Fish Flox treats bacterial infections in fish by inhibiting target enzymes necessary for DNA repair and bacterial replication. This action makes Fish Flox effective against some bacteria unresponsive to other types of antibiotics.

Fish Flox is available over the counter.

Fish Flox (ciprofloxacin)

Fish Flox is a fluoroquinolone antibiotic.


Keep this product out of reach of children and animals. Do not use or store in or near open flame or heat.

Fish Flox is intended for fish only. Do not use Fish Flox in fish intended for human consumption. For ornamental and aquarium fish only.

This medication may be used off-label in cats and dogs. Do not give to other animals. Not for human use.

CAUTION: Do not use Fish Flox in young animals. Use in dogs at 4 to 28 weeks of age is associated with cartilage injury. Large dogs undergoing rapid growth are also at risk.

Use cautiously in animals with a history of seizures or epilepsy.

Customer ServiceFree Shipping

The VetDepot Difference