I have a stupid fear of fish. I feel ridiculous because of it. I don't swim in open water anymore because of it. I only swim in pools. I'm okay with 1 or 2 goldfish, but large tanks of water with multiple fish freak me right out! I get nauseated, anxious and lightheaded when I'm around, or know I'm around multiple fish or large fish.
Falling. I'm not necessarily afraid of heights, because if I'm strapped into to something like a roller coaster or at the top of the empire state building I'm ok. But walking next to something that doesn't have a significant guardrail, I start to panic. We went to the Sequoia Nat'l forest a couple years ago and I nearly had a heart attack on the trail up to the top of the mountain. Oh and I hate ski lifts and skiing, because you are pretty much falling the whole time. Bunny slopes are ok though
Lightning - no real reason but I hide inside as much as I can during thunderstorms.