We have goldens in a couple of our high lakes in southwest Washington and one lowland lake.
Goldens were planted as an additional opportunity for anglers. We found that not all anglers were after huge trophy size fish and goldens would be a great alternative. It's not always about planting the biggest best fish!
One problem encountered is what we call high/alpine lakes are relatively low in elevation compared to where these fish come from.
I have been working with California Fish & Game over the past four years with our golden trout plants and it has always been thought that they are slow growing because they are not in the right conditions (here in Washington).
A lot of times, if they are in low elevation lakes they won't even color up correctly.
Golden trout are the most neurotic fish to try and raise. That is why they are planted out as little guys and not kept to catchable size. We spent one year trying to raise them out to catchables and it was a nightmare for the hatchery guys.
But we did find that they colored up beautifully despite being raised in low elevations. We planted them out into Gillette Lake and while they did not grow to mutant sizes, the anglers really enjoyed fishing for them.
So, as far as the strain of fish you were talking about using instead, our theory (here in Reg. 5 - I do NOT speak for other areas in the state) is that yeah, we could plant giant fish in all our lakes, but that would get kind of boring for some anglers.
So, we provide fingerling golden trout plants into a couple of our 'high' lakes and the people that hike into the back country lakes have really enjoyed the experience.
There are pros and cons for bringing any fish into a place it is not native too. But, here at least, we have had some really great success with anglers and management issues.
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stace