Well, I emptied the pools today. The weather this year has been so weird. Usually those pools would have sat at 27C+ during the day, dropping to no less than 18C overnight, usually 22C or so. This year they have gone as low as 10C, possibly lower, overnight with day temps only around 17C - 22C :-?
The day time temps have swung wildly and I think the hottest the pools got was about 27C, for a very short period of time. Usually they were around 18 - 22C
I had seen plenty of spawning activity but no sign of fry at all. Not sure whether the fry died in the cold or whether it was too cold to produce eggs in the first place. I suspect the former.
Having emptied both pools I recovered 8 odessa barbs and 9 golden barbs. I can't find the bit of paper on which I wrote the number originally added but I think that was it so, although I got no fry out of the effort this year, I didn't lose any of the adults either, much to my surprise.
Might give it a go again next year. I have had great success in previous years, just not this year :roll: