Dono - those abundant common shiners are also eating a lot of YP fry. You would not have lots of common shiners if you did not have a water falls where they spawn successfully in the water current. If you want to reduce shiner recruitment turn off the water falls then you will not have any common shiner reproduction this year. If you don't believe me, try it.
I think your 100% correct on the water fall. We placed river rock under the water fall all the way to the bottom of the pond in that area holding the rubber down. In front of the waterfall about 6 feet from the surface is where Andrew caught this huge specimen.
I am very pleased to see our first year 2012 recruitment in the 8-10" range. I guess I never knew how fast these perch grow. 4"-5" first year 8-10" the second and 10-11" third and seeing 13"+ the fourth year. These may not be great growth numbers but to me this is fantastic.
I have the waterfall hooked to my timer that currently is running 10 hours from 8am-6pm during the day. When the water starts to get over 55-60 degrees I then turn the water fall and aeration at night for 10 hours 8pm to 6 am.
Do you think I could become over abundant in over sized shiners?
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