If the BG are stunted, there's either too much cover in the pond for them to hide in away from the predators, or it's not a LMB stunted pond.

Like we said earlier, without knowing the length/weight of the LMB, we're only guessing that they are stunted. They might be fat pigs, but just not long! That's why the RW (sometimes shown as WR) chart is a much needed tool.

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).