played against a tank fizz as ahri, he was impossible to kill
So I just killed his team, took his towers, killed the dragon, took his team's blue, psyched him out by holding onto my E, and repeatedly taunted him as he failed to push lanes very quickly.
It was very funny to watch actually. He was fed and shitting on zed top all day long and starts to talk shit so I talk shit back and he tells me "hurr I can just E over your whole combo ahri" and then I just make fun of him because he can kill zed and can't even push the lane to his tower before he gets back in time.
Teamfights came, I got a little bit of MR from Abyssal and just ignored Fizz for the most part. I mean sure I dodged some of his stuff but I just focused on shitting on his team. Even when he attacked me I just ran or blew him up and ran anyways. He'd kill me eventually if we were in a vacuum but no such vacuum exists on summoners rift. I get minor speed boosts and I have CC I just do my job and laugh at him as he takes over 50% of my hp with nothing but defense items.... over like 10 seconds. Peace out baby, I survived almost everytime! Sometimes I'd just go back to hitting his team for the sacrifice, sometimes that was a bad idea, but whatever if they have tank fizz I can make a few mistakes. He can't capitalize on anything.
But seriously though what does tank fizz even do when he isn't killing a squishy or if there are no full glass squishies? He can barely push a minion wave without burning a ton of mana and putting his E on cooldown I think