Re: NANFA-L-- Mystery tentatively solved

Mysteryman (
Wed, 28 Jun 2006 10:45:51 -0500

> I think the name Cyclochaeta is out of use, and looking through Glenn
> Hoffman's "Parasites of North American Freshwater Fishes" I find no
> reference to it. But I'd hazard a guess that these protozoa are genus
> Trichodina, usually gill parasites but capable of whole body infestations.
> I hope to look and see; we might be going out today for more shiners, and
> I'll keep a close eye on the stripeds.
> --Bruce

Yes, they do look like a Trichodina type to me, all , you know, swirly.
They ripped through the Rainbows like wildfire, along with the Redeye
Chubs, but did relatively little damage to the Flagfins, killing only a
few. There is another shiner in the tank as well, looks like maybe an
Alabama Shiner, that has also been just fine the whole time. The Bluespotted
Sunfish in the tank have been wholly unaffected.
I checked the gills of many specimens, but found no parasites on them.
Everything seems to be recovering now, but I'm not convinced that things are
completely safe yet.
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