my temp is close to 23~25 usually in my tanks, because i dont like the hot temp, and found it is more easy to raise the temp than lower it
and i found the fish more healthy , and when i have special requierement i raise the temp.
and i see in the varieties species that most of subtropical/temperate species
are well between 70 and 80 (21 and 27).
again the probleme is to found them.
but with guy like mustafa i am pretty sure they will be more available in the hobby hopefully