Temprature question for C. cf Barca / True Blue / Mehgalya Leopard

[Icysword]

Hi am aware that these come from high altitudes, but was wondering what should be the normal temprature these guys should be kept at?
Accordingly will plan to pick one of these.

 

[chronick]

true blues 12-15C is ideal

cf barca 17-19C

never owned a meg leopard though so im not sure, but i would assume around 15C, ias 've heard they like it a bit colder

 

[Icysword]

Thanks for the info.