I know there's this question which is almost a duplicate, but this question is about whether the meat is poisonous.
A person who worked in the fisheries department said he studied this. That fishes subjected to trauma had poor quality meat. He also cited this as the reason that Muslims drain the blood from animals before eating them, so as to remove the blood which may contain adrenaline which is released because the animal is afraid of being killed (probably untrue). This person said that the adrenaline is poisonous to us if we eat such meat.
Studies of lesser lactic acid in the meat and dryness of the meat (the indicators of meat quality which they mention) is different from what this person told me, about meat being poisonous. I couldn't find any evidence of this. Could it just be a myth propagated by vegans?