Blighted manta ray

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

In-game examine text: "A rare catch, now blighted so it can be eaten only in the Wilderness."

It has a Grand Exchange buy limit of 10,000 every four hours, a high alchemy value of 30 gp, and item ID 24589.

View on OSRS Wiki

Blighted Manta Ray currently has a flip margin of −2 gp, which isn't profitable to flip right now despite 1,082,742 trades over the last 24 hours.

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