The Jew fish is also known as the Goliath grouper,this is the largest fish on the reef. They are yellowish brown to olive green in color, with their head and fins covered with small black spots and the body containing irregular dark and vertical bars and spots. Their fins are rounded and they have small eyes compared to their body size. These large creatures can grow up to 8 feet and weigh more than 700 pounds. The Jew fish makes a loud sound by vibrating a membrane inside their bodies, this sound can be heard from a distance and is believed to scare off intruders and locate other Jew fishes. They have a lifespan of up to 50 years.