Baytril / Enrofloxacin Dosing Injectable in Koi and Pond Fish

You can use Enrofloxacin up to three days apart against bacteria susceptible to its effects.

Baytril: (Enrofloxacin) Injectible is usually a 2.27% solution.

I have used this with success in cold water.

Do not inject the ovary in gravid females as the drug will not be absorbed efficiently. Gravid females are good candidates for intra muscular injections.

Baytril need only be dosed every other day, or even every third day in most fish. This is new information.

Recommended dose, (I. ictaluri) is 14mg per kg.

I give the drug Intraperitoneally, with a 25 G needle on a tuberculin syringe.

Fish Length in inches
Volume Baytril in ml.
6 inch
0.1 ml
10 inch
0.3 ml
14 inch
0.6 ml
18 inch
0.9 ml
22 inch
1.0 ml
26 inch
1.25 – 1.50 ml
1.75 ml
2.0 ml

Be careful injecting gravid (egg laden) females. The antibiotics will simply go into the egg mass and will not get diffusion throughout the body where needed! Better in those to inject IM (Intra Muscularly)