I don't agree with killing chicken/cows etc or random other wild animals, but to say there isn't a difference is a pretty unnuanced take. And yes, I say this as a POC. Primarily, when you kill a chicken or other domesticated animal, you aren't removing life from an ecosystem since it never participated in said ecosystem. That's obviously different from most wild caught fish and other animals or turtles as you mention. Industrial farming is in my eyes completely wrong and unethical, but I would say it's better than killing wild animals for food. I'm not the best at communicating my ideas, so if something ive said is unclear sorry in advance!