Do fish feel pain?

[Jackalope]

Fish respond to stimuli, reacting as they're wired to react. Same with humans, but we're much more histrionic.

Riffing off of this comment.

Yes, humans have more complex "software" and "hardware", to use familiar computing analogies.

It's clear that fish react to stimuli that humans would perceive as painful. It's doubtful (to me) that fish have the same qualitative experience of pain that humans do, but they do have their own experience.

To me, that's why the questions of "what does it mean to feel pain" are crucially important to have any kind of meaningful discussion on the subject without anthropomorphisms.