RuneScape Classic Wiki
RuneScape Classic Wiki
The main RuneScape Wiki has an article on: Salmon
The Old School RuneScape Wiki also has an article on Salmon.

Salmon are a type of fish that can be cooked at level 25 Cooking, granting 90 cooking experience. They heal 9 hits when eaten. Players stop burning salmon at level 58 cooking, or 55 cooking with Gauntlets of cooking. Salmon can also be obtained from the West Ardougne General Store.

Raw salmon may be caught at level 30 Fishing with a fly fishing rod and feathers as bait. They are fished from "lure" spots in rivers near Lumbridge, Barbarian Village, Shilo Village, and Tree Gnome Stronghold. They give 70 Fishing experience when caught.