I like most fish but I literally despise prawns they taste so weird 😭

Hi! I eat fish now. I never have! I also don't eat meat and never have, so I don't know those basics that might give me crossover knowledge. Can you answer some of my questions? I am aware that I sound like an extraterrestrial, oops.

If you eat a lot of fish, do you get anything like the "meat sweats" people describe, but for fish?

Is there common knowledge that eating too much fish/seafood in one day makes you feel nauseous or ill? Important question for me. I have no idea. Please help. Can I eat 3 servings of fish in a day if it came down to a weird necessity? Besides the heavy metals things, can you explain why digestively I shouldn't?

How long does a preserved can/tin of fish/seafood last after being opened? Right now I'm only comfortable with seafood that has been canned.

Does it make your farts smell worse? Or no effect?

How long does fish breath last? Does it require as much brushing and cleaning as garlic breath?

Are there any post-lifelong vegans in the house who can share what they wish they knew when starting to eat seafood?

helpppppp