From my culture of this species. The culture was started last year from locally wild-caught individuals from this area.
They bioluminesce only briefly when disturbed. A second or less. For this shot, I set up the camera with a very high ISO and 5s exposure, then turned out the lights, started the exposure and gently blew on them to trigger the bioluminesce.
The bioluminesce is visible by eye, in a sufficiently dark room.