No, they won't - they usually swim. wink

Anywhoo.......................

You might lose some, but I doubt that it will be enough that you should worry about it, and I doubt that it would be enough that you would need to restock.

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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).