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Help Identify White Bumps

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Fisherman2020

Feeder Fish
Have you tested your water?
No
If I did not test my water...
  1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.
Do you do water changes?
No
If I do not change my water...
  1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.
catfish bumps 2.JPGcatfish bumps.JPG

Channel Cat caught on the Tennessee River on May 10th 2020. Has white warts/bumps on a large portion of its body. After doing some research it seems that they (the bumps) are too white to be Clinostomum marginatum, and too big to be Ichthyophthirius. However, I'm no biologist, so I figured I would post on a few forums online to see if any experts might be able to weigh in; preferably a biologist that's spent time in US rivers. But, any help will be appreciated. Thanks in advance!
 
Fisherman2020 said:
View attachment 1418051View attachment 1418052

Channel Cat caught on the Tennessee River on May 10th 2020. Has white warts/bumps on a large portion of its body. After doing some research it seems that they (the bumps) are too white to be Clinostomum marginatum, and too big to be Ichthyophthirius. However, I'm no biologist, so I figured I would post on a few forums online to see if any experts might be able to weigh in; preferably a biologist that's spent time in US rivers. But, any help will be appreciated. Thanks in advance!
Click to expand...
Welcome aboard
@kno4te
@thebiggerthebetter
@Fishman Dave
 
Protozoan infection to me. Maybe epistylis.
 
I'm afraid I am stumped too.
Looks much protazoan but seems too large.
Whiteness looks fungal, but the spots dont.
reminds me of carp pox (herpes virus) but wrong species and again too white.
back to some large form of protazoan.
 
Fisherman2020 said:
Well, thanks anyways everyone. Hopefully the Tennessee Wildlife Resources Agency emails me back about it.
Click to expand...
If they do (or some better info is offered on those other forums you had mentioned), please share.
 
Got a response from the TWRA, but sadly it was a dead end:
_____________________________________________________________________

Hello,

Thanks for sharing the photos of the catfish.

While it looks to be a parasite or lesions from a parasite, our expert at Auburn Fish Disease Laboratory could not determine which one based on the low resolution photos.

There are several different parasites that could cause that sort of lesions.

Sorry for not knowing exactly, but if you happen to catch another, you can take a sample which can be sent to the fish disease lab at Auburn University.

Regards,

Mike Bramlett
TWRA – Fisheries Division
 
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