It's a fancy name to enhance sales potential. If you want to ferret out specifically what it is, ask the provenance of the fish. Where were the adults collected? If the answer is "I don't know" wither move on or if you like the way it looks, make a decision.
Marketing 101 - If you can put a shine on a turd and convince people the smell is aromatic AND give it a fancy name...someone will buy it.