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  #21  
Old 13-03-2017, 07:47 AM
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Default Re: scottish tench

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Originally Posted by BobP View Post
A) Tench won't eat filamentous algae - blanket weed. I doubt if grass carp would be that keen either. It is the product of enrichment, pure and simple. If it is a reservoir then there is a feeder stream and given the presence of filamentous algae the enrichment is most likely from a sewage works upstream or from farm based run-off. Just about the only way to fix THAT is to take the place off-line, and even then it will take several years, possibly decades depending on how long the enrichment has been going, to use up all the free and locked-in nutrients.

Anyone who has seen tench feed will know how they do it. They bury their heads in the silt and eat bloodworms and other larvae. While they do so they puff great clouds of silt out through their gill covers and send clouds of tiny bubbles up to the surface. It looks like someone has dropped a big Alka-Seltzer into the water.

What all this does is to mobilise the silts and will, if there are enough tench, make the water turbid. However, if the enrichment entering the lake is from a sewage works then there will be phosphates in it, and these get locked into the silts on the lake bed in preference to being free in the water column. When the tench mobilise those silts they also free up some of the phosphates which react with sunlight and helps to keep the filamentous algae going.

So, Col, now do you see what I mean? Shoving a bottom feeder into a trout lake is asking for trouble unless it is a very small number and you are sure they can't breed.
What's all this got to do with a decision a misguided club committee may or may not have made 30 years ago...??

Spare us all the patronising lectures for once...
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  #22  
Old 13-03-2017, 08:55 AM
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Default Re: scottish tench

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Originally Posted by BobP View Post
You don't so I don't see why I should.
No, I do wish I'd kept my trap shut.

Col
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  #23  
Old 13-03-2017, 10:52 AM
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Default Re: scottish tench

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What's all this got to do with a decision a misguided club committee may or may not have made 30 years ago...??
I think the best thing to do is say I got that thing with the angling club totally wrong - picked somebody up wrong - mis-heard something 30 years ago - listened to someone who was talking bollox - who knows? Mea culpa.

Col
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  #24  
Old 13-03-2017, 12:17 PM
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Default Re: scottish tench

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I think the best thing to do is say I got that thing with the angling club totally wrong - picked somebody up wrong - mis-heard something 30 years ago - listened to someone who was talking bollox - who knows? Mea culpa.

Col
You would be surprised Col, its a well bandied about rumour/misconception, I've heard it mentioned many times. All I can tell you for certain, is that there were definitely tench in Humbie Res during the early 80s. As to how or why they got there, or if there is still a population of them today, I couldn't say . As with all "rumours",these things can grow arms and legs....

I can make a stab at how the rumour got started based on the level of ignorance the trout fishing fraternity had about anything concerning coarse fish at that time but that's about it.
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  #25  
Old 13-03-2017, 12:22 PM
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Default Re: scottish tench

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or if there is still a population of them today, I couldn't say...
Did you see that Google Earth image? Is it permanently like that now, I was wondering?

Col
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  #26  
Old 13-03-2017, 12:32 PM
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Default Re: scottish tench

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Is it permanently like that now, I was wondering?

Col
No idea lad...never been up there in years.
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  #27  
Old 13-03-2017, 07:41 PM
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Default Re: scottish tench

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Originally Posted by Cap'n Fishy View Post
Did you see that Google Earth image? Is it permanently like that now, I was wondering?

Col
I had a look at it last summer with a view to clearing a swim and fishing it for tench. The level was fine but it was choked with blanket weed.

I set about a bit at the dam with a weed take and attempted to clear a gap big enough to fish in but as soon as I removed any weed the gap just filled in with more weed.

I tried for about an hour to no avail and gave it up as a bad job when the midges appeared.

As others have said there were tench in the Clay Hole at Winchburgh, Paddy's and Humbie Quarry too.

It looks like there were tench in the Reservoir as recently as 2010 as can be seen in this video from 1min 5s onwards, I suspect they are still there,


Last edited by weetroot; 13-03-2017 at 07:51 PM.
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  #28  
Old 18-05-2017, 10:54 PM
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Default Re: scottish tench

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Originally Posted by pentlandflyman View Post
Forth and clyde, a few in the union and some of the quarries/ponds in West lothian, numbers in the forth and clyde are nowhere near what they used to be though.

Never caught one but think they are stunning looking fish, are/where they known as medicine fish ? I'm sure I read that once ��anyway their colour and orange eye just look cracking.

Has anyone ever had one on the fly ?
https://www.facebook.com/merebeckfly...type=3&theatre

Not Scotland but apparently this one was on a cats.
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