King Mackerel (Scomberomorus cavalla)- The King Mackerel is a migratory species of mackerel of the western Atlantic Ocean and Gulf of Mexico. It is an important species to both the commercial and recreational fishing industries. The king mackerel is a subtropical species of the Atlantic Coast of the Americas. Common in the coastal zone from North Carolina to Brazil, it occurs as far south as Rio de Janeiro, and occasionally as far north as the Gulf of Maine and also found in Eastern coast (Chennai) and Western coast of India. Nonetheless, a preference for water temperatures in the range of 20 to 29 °C (68 to 84 °F) may limit distribution.