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Ekgoetze08
04/19/2016, 08:08 PM
Two of my seahorses have external parasites. Can we try to remove them? They are in a hospital tank now with formalin.

ThRoewer
04/19/2016, 08:25 PM
It's Argulus (https://edis.ifas.ufl.edu/fa184), a crustacean parasite, also called fish louse. They are quite common with pond fish (fresh and saltwater).
They can be manually removed (use tweezers) if just dealing with a low infection on a few fish in a QT setting.
Chemotherapy to treat larger systems with many fish would require Trichlorfon (Dylox).

I've seen aqua cultured seahorses come with these - it seems the breeder has an infested outgrowing pond.

Ekgoetze08
04/19/2016, 08:36 PM
Thanks so much me and my boyfriend just removed them :)

BlueCat1949
04/20/2016, 09:54 AM
You will want to do a medicated dip of some kind to clean them off your horses. Google it for suggestions on how to proceed. Removing them manually is only a temporary solution as there are always more that you don't see in your system to reinfect your horses.