The Planted Tank Forum - View Single Post - Why cull shrimp?
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Old 10-10-2012, 02:30 PM   #6
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It could be any trait, it's just to clean up the genes so that the ones that aren't disireable don't show up in later generations. Also when we use the term cull, we sometimes don't mean to kill them off, we just remove them from our breeding population.
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