I wonder if spawn timings are later here in MI since weather was cool this spring? I didn't see the circles in the rocky area till last week. It is about 20" of water I would say. It is interesting that they picked what appears to be only one spot to make the nest and 4-5 nests are clustered right next to each other.

It is in the shaded side of the pond (SW corner under tree shade) and the opposite side from where I always hand feed the fish.

It seemed like memorial day snuck up on us and everyone here is frantic to get their gardens put in. We have 90 plus degrees for the next 4 days so the heat wave is on... Time to switch aeration to night time only and cool the water back down.