Yep I def didn't realise how serious @fishmosy was about the temp with caridina zebra,
forgot to turn their fan on one night recently and lost 4.
As soon as temp goes above 23c they get shaky as fishmoay said.
window AC going in their cupboard rigged to a temp controller very soon.
Even though it was at night this happened, I have still changed the lighting hours to include more light in the cooler hours of the night rather then when it's hottest in the day to help keep the system cool but still maintains nice biofilm.
I guess reaffirm what's said above, Up the oxygen as molecules are further apart the hotter it is etc.