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#6170064 - 02/13/12 11:16 AM Fin clipping?
macrabbit Offline
Campfire Guide

Registered: 02/23/04
Posts: 4650
Loc: C. Calif
Got an email notice from F&G warning against adipose fin clipping.
Sure, I could google the subject. But I've got you'all!

What's that all about?
Why would someone circumcise a fish? Why would the Dept. care?
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#6170551 - 02/13/12 01:06 PM Re: Fin clipping? [Re: macrabbit]
sgt217 Offline
Campfire Guide

Registered: 07/29/05
Posts: 4974
Loc: Arizonan transplanted to N Wis...
People do it to see if they recatch released fish. The Game and Fish do it to collect survey data. It messes them up when others do it.
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#6170649 - 02/13/12 01:29 PM Re: Fin clipping? [Re: sgt217]
macrabbit Offline
Campfire Guide

Registered: 02/23/04
Posts: 4650
Loc: C. Calif
Huh.
OK, thanks.

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#6170659 - 02/13/12 01:30 PM Re: Fin clipping? [Re: macrabbit]
sgt217 Offline
Campfire Guide

Registered: 07/29/05
Posts: 4974
Loc: Arizonan transplanted to N Wis...
It's a survey tool for game and fish and when others do it it messes with their numbers...and heads...
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#6170681 - 02/13/12 01:35 PM Re: Fin clipping? [Re: macrabbit]
macrabbit Offline
Campfire Guide

Registered: 02/23/04
Posts: 4650
Loc: C. Calif
If the Dept. clips fins, then an angler doesn't know if his catch is an F&G pet or a released- making his efforts worthless.

I can see the potential for all sorts of strange clipping combos, then, to identify fish like cattle. Double notches in the dorsal, opposing snippets out of the top fluke, etc. We might need a central registration office, to record fish brands!

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#6170697 - 02/13/12 01:39 PM Re: Fin clipping? [Re: sgt217]
macrabbit Offline
Campfire Guide

Registered: 02/23/04
Posts: 4650
Loc: C. Calif
BTW, how's Owen's tying coming along?

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#6170817 - 02/13/12 02:04 PM Re: Fin clipping? [Re: macrabbit]
sgt217 Offline
Campfire Guide

Registered: 07/29/05
Posts: 4974
Loc: Arizonan transplanted to N Wis...
It's hockey season, but when that ends he will be back at it....He did well fishing last year catching fish on a few aztecs you sent him, along with catching his first on one he tied....
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#6170905 - 02/13/12 02:23 PM Re: Fin clipping? [Re: sgt217]
Sitka deer Offline
Campfire Oracle

Registered: 02/02/01
Posts: 25512
Loc: Anchorage, AK USA
Couple points... Salmonids are the primary fish with adipose fins (catfish is another group) as far as sport goes... and hatcheries clip the adipose to indicate the fish is a hatchery fish... which may be killed in many places, where wild fish may not be.

Clipping the adipose would make the fish a "legal" take in lots of places. That may be part of what CA is worried about.

It has long been held the adipose does nothing and clipping it has no effect on fish. Fairly recent studies have shown adipose-clipped fish actually keep their tails moving in power strokes more than 10% more than non-clipped... The hypothesis is that the fin acts a vane to increase efficiency, or so I read a while back.
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#6170941 - 02/13/12 02:28 PM Re: Fin clipping? [Re: sgt217]
macrabbit Offline
Campfire Guide

Registered: 02/23/04
Posts: 4650
Loc: C. Calif
Good for him!

(And bad on you for not sending me a pic! grin )
(Unless you did and I'm forgetting. frown )

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#6170950 - 02/13/12 02:29 PM Re: Fin clipping? [Re: Sitka deer]
macrabbit Offline
Campfire Guide

Registered: 02/23/04
Posts: 4650
Loc: C. Calif
So some regs read that one may keep a clipped fish (hatcher) but not an unclipped (wild/feral)?

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