Fishing
Old English fisc (as a noun denoting any animal living exclusively in water), fiscian (verb), of Germanic origin; related to Dutch vis, vissen and German Fisch, fischen .
wiktionary
From Middle English fischynge, equivalent to fish + -ing.
From fish + -ing.
etymonline
fishing (n.)
"the art or practice of trying to catch fish," c. 1300, fysschynge, verbal noun from fish (v.). Figurative use from 1540s. The Old English noun was fiscað.
[O]f all diversions which ingenuity ever devised for the relief of idleness, fishing is the worst qualified to amuse a man who is at once indolent and impatient. [Scott, "Waverly," 1814]
Fishing-boat is from 1732. Fishing rod (1550s) is older than fishing pole (1791). To "go fishing" is as old as Old English on fiscoð gan.