I haven't been keeping any individual records - I probably should be shouldn't I. Should I be charting things like length/age or weights?

I have records of what I put in and when -

I'm amazed how the pond went from 10000000s of fry (FH, YP and BG) in July - to very few now - almost hard to find. I also noticed this year that I had MUCH less obvious BG spawning in the spring - and for less a duration. Do you think the surpression of later BG spawning is due to predation?

FH