Re:Seahorse swollen eye

#4639
Pete Giwojna
Guest

Dear Lucy:

Excellent — chloramphenicol is the treatment of choice for Vibrio infections and a doughnut-shaped swelling around the eye is one way that such infections may present themselves.

Chloramphenicol can be given orally or used as a bath (Prescott, 2001c). Therapeutic baths lasting 10-20 hours are administered in a chloramphenicol solution consisting of 40 mg per liter of water (Prescott, 2001c). If the seahorse is still eating, the chloramphenicol can also be bioencapsulated by gut loading feeder shrimp or ghost shrimp with flake food soaked in the antibiotic solution. Even if the affected seahorses does not eat, feeding medicated shrimp to its tankmates is a good way to help prevent this contagious disease from spreading to the healthy seahorses (Prescott, 2001c).
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All things considered, artchic, I would say that chloramphenicol (i.e. Chloromycetin) is the treatment of choice for marine ulcer disease (i.e., flesh-eating bacteria) and most Vibrio infections, in general. It is effective both as a bath for prolonged immersion or when administered orally. If the affected seahorses are no longer eating, then administering the chloramphenicol to the treatment tank would be a good option for you if your other seahorses develop any symptoms of this disease.

The treatment protocol for Chloramphenicol or Chloromycetin is as follows:

Chloramphenicol can be used to treat Vibriosis at 40 mg/ litre of water (which comes out to about 150 milligrams per gallon) in a bath for 10-20 hours. It is important to watch the quality of the water, and if it starts to become turbid, the water must be changed. It is best to treat in a separate tank. In stubborn cases, a series of such baths may be necessary to resolve the problem, in which case a complete water change should be performed before the medication is redosed.

Chloramphenicol can also be used as an additive to the feed, if the fish are still eating (all to often in a major infection they will refuse to eat, but this treatment may be most useful in preventing the horizontal spread of the infection). When used as an addition to the feed use 500 mg per 100 gram of feed. (In the case of seahorses, the flake food medicated with chloramphenicol in this way would first be bio-encapsulated in live feeder shrimp, which would then in turn be fed to the seahorses.)

If you do obtain the chloramphenicol, be sure to be very careful when handling it, Lucy. Remember, in a few rare individuals exposure to chloramphenicol can cause a potentially fatal side effect (aplastic anemia). These are rare cases and almost always involve patients who were being treated with the medication, but I would use gloves when handling it as a precaution and if you crush crush up tablets of chloramphenicol, be very careful not to inhale any of the power.

Because of this side effect, which affects one in 100,000 humans, chloramphenicol is no longer available as a medication for fishes here in the US and can therefore be difficult to obtain.

Best of luck resolving the exophthalmia or Popeye, Lucy.

Respectfully,
Pete Giwojna


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