DNR's fish count low for nearby lake. No crappies?

[skogie1]

Finding out why the crappies aren't biting much on the Cullens by Nisswa. Fish count by the DNR last year shows very low crappie count (they only netted 12 I think).

My assumption for why they aren't biting anymore, anyway.... Don't know if anyone else knows of a low fish count in a lake but still catch plenty of them?? Maybe I'm doing something wrong.... Maybe they're fished out.....