You got convicts to breed outside in winter? lol ok, I give up....unless you're in the Amazon, N. Australia or Equatorial Africa, I'm not seeing how. True, 72F is recommended low for Tropical fish, and while during a power outage I had many fish hold strong at 56F - Jacks, Jaguars, Cons, Jewels, Texas, etc.....but I lost a few stunning Acaras and Green Terrors, and in other instances I lost Jaguar-fingerlings in 68F-70F the previous year.
Fish are too unpredictable.
I'm in Tasmania, about 7°c on average in winter.

