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SingleShot
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Joined: 20 Sep 2010
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A really skinny EB from Rock Lake. A fishery program, in alpine lakes, utilizing an apex predator would turn fish like this into part of the food chain.
MAKE FISHING GREAT AGAIN Skinny Fish
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Leafguy
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Joined: 16 Sep 2003
Posts: 525 | TRs | Pics
Location: Wenatchee |
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Leafguy
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 Thu Sep 28, 2017 10:01 pm |
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| SingleShot wrote: | | MAKE FISHING GREAT AGAIN |
If your fishing isn't great, explore!!! 
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slabbyd
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Joined: 21 Jun 2005
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slabbyd
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Fri Sep 29, 2017 8:55 am |
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Triploid versions of these predatory fish you speak of? Wouldn't that solve the problem, offer some hefty fishing and not cause long term issues/damage?
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SingleShot
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Joined: 20 Sep 2010
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These fish were caught in Merritt Lake. The otoliths were sent to the WDFW for aging and there are some interesting ages. Age data
Trout, generally, sexually mature around 12 - 14 inches or, generally after reaching age 4.
In the list you will note some fish with a TC. It stands for being previously caught and having its tail clipped. We TC 115 fish in one day as part of this project.
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iron
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Joined: 10 Aug 2008
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Location: southeast kootenays |
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iron
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Thu Oct 05, 2017 4:55 pm |
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i don't fish, but i cannot possibly imagine the logic of poisoning a body of water. i don't care what's in it.
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Leafguy
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Joined: 16 Sep 2003
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Leafguy
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Thu Oct 05, 2017 5:26 pm |
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I may be wrong, but I thought rotenone was used because it is a natural occurring substance that breaks down soon after it is used.
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SingleShot
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Joined: 20 Sep 2010
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If the lake has no outlet then rotenone is used on a per acre amount. If there is an outlet then a calculated amount of potassium permanganate is applied to detoxify the poison. Too much potassium is even more deadly than the rotenone and will kill fish miles downstream.
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DIYSteve
seeking hygge
Joined: 06 Mar 2007
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Location: here now |
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DIYSteve
seeking hygge
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Fri Oct 06, 2017 11:09 am |
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The poisoning in some NCNP lakes seemed to have turned out fine. The reproducing skinny fish are gone and the salamanders have repopulated. Examples are Sourdough, Nert and Lower Blum.
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iron
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iron
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Fri Oct 06, 2017 11:11 am |
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| DIYSteve wrote: | | The poisoning in some NCNP lakes seemed to have turned out fine. The reproducing skinny fish are gone and the salamanders have repopulated. Examples are Sourdough, Nert and Lower Blum. |
but would you drink the water, unfiltered?
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SingleShot
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Joined: 20 Sep 2010
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Several years ago Blum was illegally planted with brown trout.
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DIYSteve
seeking hygge
Joined: 06 Mar 2007
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DIYSteve
seeking hygge
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Mon Oct 09, 2017 11:46 am |
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| iron wrote: | | but would you drink the water, unfiltered? |
No, because I always filter water from lakes, no mater how remote. Re streams fed by a rotenone-treated lake, I'm not concerned for several reasons: Rotenone suspended in water in the concentrations used for fish poisoning is not toxic to humans. Even in much higher concentrations in water, it's at most mildly toxic to humans, at worst causing vomiting but no long term problems. After a few days, rotenone oxides to rotenolone, which is an order of magnitude less toxic. We often breathe, drink and eat more things toxic without knowing it.
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Tom
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Joined: 15 Dec 2001
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Tom
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Mon Oct 09, 2017 12:58 pm |
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| DIYSteve wrote: | | The poisoning in some NCNP lakes seemed to have turned out fine. The reproducing skinny fish are gone and the salamanders have repopulated. Examples are Sourdough, Nert and Lower Blum. |
I assume you meant Lower Berdeen because Nert didn't have fish only salamanders when I fished it ~10 years ago.
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DIYSteve
seeking hygge
Joined: 06 Mar 2007
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DIYSteve
seeking hygge
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Mon Oct 09, 2017 8:06 pm |
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| Tom wrote: | | I assume you meant Lower Berdeen because Nert didn't have fish only salamanders when I fished it ~10 years ago. |
No, I meant Nert, which I assumed had fish at one time because we saw an old tin milk jug up next to it, the kind that was used to transport fry years ago. I cannot imagine another reason for someone to have schlepped up there with a big tin milk jug. The last time I was there (of 3 times) we saw lots of salamanders.
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SingleShot
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Joined: 20 Sep 2010
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There are several piscicides available besides rotenone. All effectively kill fish but the approval process, for lakes on Forest Service lands, require WDFW/USFS cooperation which has been elusive.
Another option is apex predators. Brown trout, tiger trout, northern pike minnow, mergansers, cormorants, and the ugliest fish in the world, the tiger musky. All eat fish but the birds probably consume more. Most hi lake anglers would prefer a salmonid like this fish an almost 8 lb. brown trout from Rock Lake that gorged itself on stunted brook trout.
At present, the only stunted lake project I know of is at Anderson Lake, in Lewis County. Its been ongoing for 8 - 10 years and reports are sketchy about its success.
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Sky Hiker
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Joined: 03 Feb 2007
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Wow SS you sound kind of partial to planting Brown Trout in places like Rock Lake. What does the WDFW think about Brown trout being planted?
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