.... very late Summer RES spawns, and that was a first for both of us, I believe. I had a few males visibly bedded around my dock, probably in many other places around the pond. Originally I thought they were BG, until I caught a few of the bedded fish - Male RES! At Bruce's I saw at least 5-6 beds in the bay near his dock, in very shallow water. The fish [M RES I assume] were quite large, also.
RES are commonly reported to be single spawners - these fish either:
1. Delayed spawning until Summer was winding down and photoperiod and water temps matched their late Spring preferences - which just doesn't seem feasible.
2. RES had multiple spawns.
Nos. 1 & 2 above happen a lot more than one might think.
The written data strongly indicate this from studies setting out late season trawling info from seining. Lots of late season fry/small yoy BG , RES , LMB and others as well. RES can spawn more than once a year but no where near as many times or a prolific as BG.