Raw manta ray

Raw Manta Ray is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "A rare catch."

It has a Grand Exchange buy limit of 15,000 every four hours, a high alchemy value of 120 gp, and item ID 389.

View on OSRS Wiki

Raw Manta Ray currently has a flip margin of −20 gp, which isn't profitable to flip right now despite 367,690 trades over the last 24 hours.

Items with negative or zero margins like this are better watched than actively flipped until the spread widens.