The plant appears to be a Phalaenopsis. The spike will grow to a certain length dependant on culture. If you leave the spike on after the flowers finish it may produce other off shoot spikes from eyes on the spike. Terminal yes but not necessarily end of flowering.
Post another picture. That does not look like a terminal spike to me. Isnt it coming up from UNDER the crown? That looks like a new leaf to the left of it.
I think that is not terminal spike. Terminal spike grows from center of the crown, and it looks to me that spike grows lower, from side, not center of the crown. It would be good if you can put another picture from different angle
I'm a noob, lol, but I don't think that is terminal either. I have one with a terminal spike. See pic. This plant did bloom for months. I have a thread about this plant. See link.
I don't know why they are purple. I've bought several phals that had purple leaves and they've stayed that way.
---------- Post added at 03:35 PM ---------- Previous post was at 03:35 PM ----------
This phal just had a spike growing a little higher up than I've seen on my plants before. Im glad its not a terminal spike. Now I know it has to be coming from the center for it to be terminal. Thanks