I think Sunil has a good explanation for the distribution of large bluegill during spawning season. Bluegill social hierarchy is important during spawning season. Largest bgill are dominating the prime or best spawning areas regardless where they are located in a large pond. Smaller bgill have to use secondary sites or perimeter spawning sites. A pond this large may also contain sneaker and satellite bgill who are sexually mature but do not display normal sexual characters.

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