Allen and All, I'll do a survey asap and report.
Allen is right about the spring water. That area is opening up as the pond matures and I have the ability to survey that area more easily. I know that the water temp was warmer than Allen's on several occasions, and I attribute that warmth to the spring water. Over the winter, the O2 levels were good in the back water, so the environment was there to support the Tilapia. Todd tells me that if any survived, it would be the bigger males.
I see FA growing in our pond now, so I doubt many Tilapia survived, but I'll know after I take a look.
I am planning on adding new Tilapia next week because I see the diference they make when added. I plan on getting them from Overton Fisheries, Todd's group grows very nice fish!!