Answer:
I am a celebrity fish.
I can fall off a building and live, but in water I will die. What am I?
I am in the middle of water but am not an island.
I have roots nobody sees. I am taller than trees. Up, up I go but I never grow. What am I?
Man walks over, man walks under, in times of war he burns asunder. What is it?
I am rarely touched but often held. If you are smart you'll use me well. What am I?