Mystery Dragon Fruit Growth

The mystery dragon fruit appears to have slowed its growth.  It has put on a great deal of mass considering that it has been growing indoors for 1.5 months.  I read a document titled "Morphometric Analysis of 21 Pitahaya,"  which tries to discern identifying characteristics of pitahaya varieties.  According to the infomation provided in that document, I believe the most likely color of the frit will be magenta.  I hope it fruits this summer, and I hope the fruit is delicious.