The Fiddlesticks build for Jungle is Zhonya's Hourglass, Shadowflame, and Stormsurge. This LoL Fiddlesticks guide for Jungle at Platinum+ on 14.3 includes runes, items, skill order, and counters.
Fiddlesticks Counters
52.7%
(+0.1%)
48.7%
(+0.8%)
3.5%
(+0.3%)
3.7%
(+0.6%)
664
(+4)