Origin: Uncharted 3: Drake’s Deception
Earliest Release Date of Origin: November 1, 2011
Works: [Uncharted 3: Drake’s Deception | PlayStation 3 | November 1, 2011]
Brief Info on Item: The Sturgeon is a fish found on a fish market in Uncharted 3: Drake’s Deception. Only shown to appear in Chapter 10 – Historical Research, after Talbot pushed Nathan Drake through the window, Drake stole Cutter’s notebook and encounter Marlowe’s Agents. During the battle against the agents, Drake notice a fish market table and use the fish to attack, which could kill them. The fish reappears in PlayStation All-Stars Battle Royale as one of the two items for the Uncharted series.
Description of the Item's Use: The Sturgeon item appears and is used like the home-run bat item. However, when charged with the Sturgeon, instead of going further to a KO, not only it’ll go half home-run bat ranged hit distance, it’ll also deal 25% damage if hitted.
I don't think the creators of Uncharted know what a sturgeon looks like.