Herringbone can be obtained at level 65 Fishing.
This fish can be acquired by casting a fishing rod into bodies of water that indicate a 
Grasshopper to fish at this fishing spot. Upon being caught, it gives you 1700 exp in the Fishing skill.
Location
You can find Herringbone by Fishing at Docks, south of Brightleaf Forest and the Lake, east of the Slime field.
Recipe
Currently no recipe.