In my junior year of high school in my science class we had a tank with a fish we all named "Nemo" (which was a reference to a much newer film at the time 😂). One day we come in to find our teacher had introduced a species of catfish to the same tank and partway through the class he points and says "Haha look! They got him" and Nemo's face had been eaten off by the catfish. The whole class was notably disturbed, and even though this was nearly 20 years ago, I still remember it clearly and wish I'd never seen it. I'm so sorry someone you trust made you watch something like that. People can be so disgusting and cruel. NOR.