Patients with coronary heart disease can certainly eat fish, including freshwater fish and marine fish. Especially, the content of cholesterol and fat in marine fish is relatively low, which is helpful for patients with coronary heart disease. For fish cooking: it is best to eat steamed fish or stewed fish instead of fried fish, but in moderation, not too much.

In addition, patients with coronary heart disease advocate a light diet, one-time eating should not be too full, and a low-salt low-fat low-sugar diet should be adopted.

If the patient is smoking, it is necessary to persuade the patient to quit smoking and limit the amount of drinking, mainly to adjust daily life and workload, reduce psychological pressure, and maintain appropriate physical activity, mainly to avoid pain symptoms and not to stay in bed.

I hope my answer is helpful to you!