What is reasonable temperature range for swordtails? Some sources say 22-24C while other go up to 28C
Would slow acclimatisation to 26C be ok?
Mine are between 23 and 24C. I have run them as low as 21C with no harm whatever but don't like being that close to their minimum. In the wild, they may well see 2 or 3C per day swings so I feel that we worry about it too much. 26C is too warm for them.