The leaping sturgeon is a fish which requires 70 Fishing, 45 Strength, and 45 Agility to be caught, providing 80 Fishing experience, 7 Strength experience, and 7 Agility experience. It can be caught at Otto's Grotto or Mount Quidamortem with a barbarian rod and suitable bait after starting Barbarian Training.
While it cannot be cooked, leaping sturgeon can be gutted with a knife, providing a chance of receiving caviar and 15 Cooking experience, and may also produce fish offcuts. There's a 1/80 (1.25%) chance of receiving caviar with level 1 Cooking, and 100% chance at level 80, scaling in-between. If the player successfully receives caviar, they will be rewarded with 15 Cooking experience and a 5/6 chance of receiving fish offcuts as well. This is the only leaping fish to give caviar (which is sturgeon roe).
For an exhaustive list of all known sources for this item, see here
- ^ Jagex. Mod Ash's Twitter account. 18 April 2018. (Archived from the original on 29 May 2020.) Mod Ash: "Sturgeon: 1/80 at level 1, 100% at level 80. If that roll passes, 5/6 of offcuts with it."