I can't say that I have many persistent fears.
I have had some very short lived- temporary fears.
Like when I was newly moved into a house and I thought a man was outside my window. I was so terrified and I kept telling my mom about the shadow on my wall. She'd come in and turn on the light, and see nothing. Finally, I convinced her to turn off the light and stay, and sure enough she saw the shadow of the man on the wall. Upon much inspection, we realized it was a pile of clothes in the room next door, that was casting a distinct shadow of a man on the wall. ;D
But no, for the most part, I was the little girl playing with bugs and snakes. (I was even bit by a poisonous snake when I was 12 for playing with it. And I knew in advance it was poisonous. LOL )
My biggest and most irrational fear came after having children. I have a fear that something will happen to one of them and I will be unable to stop it or help them. I have planned escape routes and ideas of how I will protect them if someone were to break into my home.