What pushed me to APW is that there isn't much visible under the water, and the water looks pretty durn clear. I'll be interested to see better pictures, or if the OP was able to ID it from the TAMU website.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).