A more proper term would be Omnivore or Detritophage, or Ominvorous Detritophage. Vampyrotheuthis would not turn down a small fish or prawn should one be acquired alive. Far from it, such a tasty morsel is desired as it has more energy that detritus. The trouble is chasing or targeting such tasty food this far down in the water column would use more energy than it is worth. The trick to hanging out down here is to take it easy, chasing food at these depths is best left to visitors.
But of course you should not fear Vampyroteuthis, we all know well what happens to animals humans fear…now that I think of it you should fear the False Catsharks, don’t let the False fool you those and many other Benthopelagic fish are real dangerous…to humans I mean, real dangerous to humans, fear them. Do not fear Vampy.