I mostly see people discussing shrimp size here (having to kill a lot of them for one portion of meat.) I agree this is important but I’m already familiar with the arguments. I’m more interested in hearing about shrimp specific factors like eyestalk ablation and ammonia in tanks. (I’m leaning toward cutting out farmed shrimp because of the former, but I’m curious what other people think.)

almost definitely. relative intelligence is a lot lower than octopus or pig but multiplied by the amount dead per serving meat is probably much higher unless your opinion is basically “below a certain threshold value is 0”

same logic probably applies to chicken and fish tbh the only satisfying conclusion i had for myself was just to go vegetarian

Tentative yes because of general small animal concerns (more animals per meal for the same calories, even if plausibly less sentient). If I had to eat meat I'd probably choose beef.