The worlds largest flatfish with a record-breaking weight of 515 lbs and 2.62 metres in 2013 in Norway waters. Halibut is dark brown on the top with a off white belly. The halibut is born with one eye on each side of the head and about six months after birth one eye goes to the other side of the head. The eyes change color to match the side they are on (known as countershading) to keep the fish hidden from above and below. Halibut live in the cold waters of the North Pacific and the Bering Sea. Halibut prefer deep waters from 200-300 feet deep where there are rocks and ledges to live on.