Tilapia are mainly freshwater fish inhabiting shallow streams, ponds, rivers and lakes and less commonly found living in brackish water (mixing of seawater with fresh water)
Eating fish just once or twice per week may reduce your chance of a fatal heart attack by a third, says MayoClinic.com. Tuna is rich in omega-3 fatty acids, among other valuable nutrients. Tuna steak is very different than the canned version and is often served cooked rare, crusted with spices or sesame seeds.