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#495721 - 09/01/18 08:35 AM Odd fish defects?
DonoBBD Offline

Registered: 06/13/12
Posts: 1971
Loc: Ontario, Canada, Eh.
Is this common to have defects in fish?

Is this a problem or common disease?

I have caught one perch like this too but put it off as the GBH nailed it and it lived. The fish still feed and swim normal but maybe more to the right. Tee he he.

Cheers Don.

Will post up pictures when I can. Something is up with adding attachments.

The fish have a crook in their tail from their anal fin back. All have had the same crook in the same direction.

Resized_20180831_175337_597.jpg (175 downloads)
Resized_20180831_175343_9251.jpg (144 downloads)

Edited by DonoBBD (09/01/18 11:16 AM)


7/8th of an acre, Perch only pond, Ontario, Canada.

#495739 - 09/01/18 01:12 PM Re: Odd fish defects? [Re: DonoBBD]
Mike Whatley Offline

Registered: 04/22/18
Posts: 641
Loc: Louisiana
Hey Don,

I have seen that same condition in wild SMB on the Tennessee river systems. Don't know what causes it tho. I always thought it may be some kind of genetic trait.
.10 surface acre pond, 10.5 foot deep. SW LA. The epidomy of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, FHM, Longear Sunfish, Gambusia and apparently, now crappie.....I subscribe!!

#495741 - 09/01/18 03:47 PM Re: Odd fish defects? [Re: DonoBBD]
JKS3613 Offline

Registered: 02/12/15
Posts: 122
Loc: Zachary, Louisiana
I know in the aquarium world this condition is often referred to as Fish TB. While not actually TB, it is a closely related mycobacterium, I think. No idea if that's what this is, just know that this, or a similar condition, occurs fairly often in the fish trade.

#495752 - 09/01/18 09:43 PM Re: Odd fish defects? [Re: DonoBBD]
Shorty Offline

Registered: 07/28/05
Posts: 4245
Loc: Raymond, NE
I see it occasionally in LMB, not sure what causes it.

#501864 - 02/11/19 12:20 PM Re: Odd fish defects? [Re: DonoBBD]
azteca Offline

Registered: 07/08/16
Posts: 152

Some say it's a problem when the eggs hatch.

Some say it's a lack of vitamines.

It's very curious as a malformation.


#501867 - 02/11/19 12:49 PM Re: Odd fish defects? [Re: DonoBBD]
ewest Offline
Hall of Fame 2014


Registered: 03/08/05
Posts: 19702
Loc: Miss.
What % of your fish exhibit this condition?

#501868 - 02/11/19 12:49 PM Re: Odd fish defects? [Re: DonoBBD]
Matt Clark Offline

Registered: 04/02/03
Posts: 823
Loc: S.E. Iowa
Someone here told me (several years ago) might be vitamin C deficiency. I quit saving pellets over winter (vitamin C breaks down) and haven't seen it in quite awhile...of course I had to quit pellet feeding this year as my (new this past spring) grass carp were getting lazy and eating pellets instead of coontail. Just a thought..
In a lifetime, the average driver will honk 15,250 times. My wife figures I'm due to die any day now...

#501878 - 02/11/19 02:51 PM Re: Odd fish defects? [Re: DonoBBD]
Sunil Online   content
Field Correspondent
Hall of Fame 2014


Registered: 09/03/03
Posts: 11579
Loc: Somerset, PA

Where have you been??!!!!!
Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."

#501879 - 02/11/19 03:58 PM Re: Odd fish defects? [Re: DonoBBD]
Vortex 4 Offline

Registered: 11/28/16
Posts: 114
Loc: Texas
Could this be whirling disease?
4 acre pond 32 ft deep within East Texas (Livingston) timber ranch. Filled (to the top of an almost finished dam) by Hurricane Harvey 9/17. Stocked with FHM, CNBG, RES 10/17. Added 35lbs RSC 3/18. 400 N LMB fingerlings 6/18

#501900 - 02/12/19 09:54 AM Re: Odd fish defects? [Re: Vortex 4]
DonoBBD Offline

Registered: 06/13/12
Posts: 1971
Loc: Ontario, Canada, Eh.
Originally Posted By: Vortex 4
Could this be whirling disease?

Reading on whirling disease and it states salmonid fish. The tails do not turn black. I have seen this in some perch too in our pond.

Could the parasite live through the making of the feed?
Could the minnows and perch be getting it from the feed but not allowing the cycle to be complete for the parasite?


7/8th of an acre, Perch only pond, Ontario, Canada.


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