Hi DC
Yes, Pitahaya is the same as Dragonfruit. My plant produces the red juiced fruit, the white fruit tastes much the same but looks a bit insipid. I have to pollenate by hand, we don't have the right moths in my garden! I check if at least 2 flowers are opening in the evening and then set my alarm for dawn to get out there with an adapted feather duster and the stepladder before the blooms die! Labour of love and then I go back to bed! My dog gets all excited at an early start and isn't very impressed when it's back to bed instead of a walk.
Helping me in the garden by digging out my recent delivery of soil:
I've also been 'growing' Monarch butterflies. I've turned 1 purchased Milkweed into about 30 plants and I estimate about 100 butterflies have been raised in my garden this year.