fizz jungle you go for either the skirmishers sabre for dueling potential or rangers for faster clear either way you get the devourer enchant
i like the rangers more for the clear but higher elo mostly play with sabre only
then botrk > tri or iceborn depending on how youre doing and what the other teams comp is like then go tanky items like frozen heart, randuins, spirit visage, banshees, warmogs
top lane fizz you'd want to build tri first, but in the jungle you need the sustain and damage of botrk first
good alternative items are frozen mallet(stick to your enemies for days), hourglass(yolo plays), maw(mr+ad), ie(tons of dmg)
dont forget about boot enchants, i like to go with furor, esp when i dont have tri it makes up for the lack of phage passive
skill order max w first then e then q, but you want to take q lvl 2 to clear big minions faster as it does more damage than e
you can choose boots depending on matchups mr, armor, berserkers or cd. i mostly build berserkers to speed clear and increase dps
for runes you go for as like jax and 21/9/0 masteries
fizz is very item reliant with botrk being the core item for him allowing him to do 8% of max health on aa with w active
early game might need to rely on landing your ult for the amplified damage, but after completing botrk you can easily take out squishier targets
you can still easily gank a laner early if they are around half hp as w does % damage of missing health
fizz deals a lot of magic and ad damage so it's hard to itemize against him