Trout

Trout is a free-to-play item on the OSRS Grand Exchange in the other category.

In-game examine text: "Some nicely cooked trout."

It has a Grand Exchange buy limit of 6,000 every four hours, a high alchemy value of 6 gp, and item ID 333.

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Trout currently has a flip margin of +0 gp, which isn't profitable to flip right now despite 87,534 trades over the last 24 hours.

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