You’re also telling me not to listen to an exotics vet who specializes in fish for 30 years? Lol he has a 200+g. Think he’s just a tad above someone who just has a tank at home. You want to heat the tank so they speed up killing the fish…think about that.
You're kind of discrediting one of the most experienced fish health experts in the world.... You should listen to @Jay Hemdal