I hate fish, they just really irk me. If I were ever thrown into one of those big aquariums full of fish I would probably be so scared. I don't eat fish either, but I'm mostly a vegetarian, so at least I have some reason for that xP Once when I was younger (around 9 years old, I think) I had a tiny pet fish and it fell onto my skirt and I started freaking out, the fish literally was barely even an inch big. Dolphins are alright though, they're not really fish-like.
I googled it and apparently a fear of fish is called ichthyophobia, so I guess I'm not to only one
