Dave,
Until Eric provides more details, here is one of his posts from the link listed below.
posted April 06, 2005 11:48 AM
--------------------------------------------------------------------------------
Well the ice is out finally in upstate NY. My pond has been clear for about 1 week and I am seeing tons of activity with frogs, tadpoles ( many many many ) and lots of fatheads and rosy reds that made it through the winter. Seems there wasn�t any fish kill due to the creek running through a good deal of the winter even without any snow removal from the ice. Only I have not seen any of my Perch as of yet. Most of the pond is at 14 ft or more deep and the pond is now about 38 - 42 degrees surface temp. I am sort of surprised that I haven�t seen any of the perch out there yet. ( to remind folks, my pond is about 1/10 to 1/4 acre and 14-15 feet deep with a shelf around on 3 sides at 3 ft deep. ) I had added about 75 perch last summer in the 2-3 inch range. This summer the SMB go in. I will keep all informed as this progresses. I think I will see the perch start to show up as the pond gets warmer but I do hope they are just waiting to show up and not goners. Only time will tell.
http://www.pondboss.com/cgi-bin/ubbcgi/ultimatebb.cgi?ubb=get_topic;f=5;t=000173;p=3