Hello, Welcome to HCM. Eating uncooked or scaly sea food like fish might cause some gastric upset or food poisoning uncommonly means not every time. Food poisoning is nothing but acute gastroenteritis due to toxins of contaminated sea food from infections like bacteria, virus,parasite etc. Symptoms usually starts after 12 to 24 hours of eating,like nausea,vomiting,abdominal pain,loose motions,fever,weakness,fatigue, headache,abdominal cramps due to water and electrolyte imbalance. As you have this gastroenteritis and will require antibiotics, antispasmodics, antiemetics,probiotics and other supportive treatment as per your symptoms. So,consult physician if these symptoms develops otherwise there is no need to worry. Regards,