I live on a lake that's nearly 5 miles long, up to 90 ft deep. The bass run about 1 1/2 to 3 lbs. Sometimes larger but mostly that. 1 1/5 - 2 is usually the size on a typical day. I think a 5 pounder was the largest I've heard of here. But, later in the summer, after they grow a bit, the crappies are plentiful and even though I never weigh them, they average the size of the ones held up in the OP's pictures. I call them 'dinner plate' sized.
When I was a kid, crappies didn't exist, at least here. I had started fishing again here a few years ago after not having fished since I was a teenager. I caught my first crappy and had never seen one before.
One weird thing about this fish, is that after they hit and they come to the surface, they lay flat on the water, hardly fight, and it's like reeling in a mat of weeds. Wonder if that's the case everywhere.