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Ocean Sunfish or Mola

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The ocean sunfish is famous for being the largest bony fish in the world. Its scientific name is the mola mola and it is often called the mola fish.

How big is the ocean sunfish?

The average weight of the ocean sunfish is 2,200 pounds. However, some have reached a size as large as 5,000 pounds. They are a relatively flat and round shaped fish which can grow to 10 feet in length and 14 feet up and down across the fins. It has fairly small fins on its sides (pectoral fins), but large fins on the top and bottom. They are slow and ponderous swimmers, but they can swim.



The sunfish has gray, rough skin which can get infested with lots of parasites. They use other fish and even birds to help eat the parasites and clean them from their skin.

Where does it live?

Ocean sunfish live in warmer ocean waters throughout the world. They often swim in open waters, but will sometimes come to the surface, lying on their sides to bask in the sun. This is probably to warm up so they can dive deep into the ocean again.

Females can lay up to 300 eggs at a time. When the babies hatch they are called fry. A fry has sharp spines to help protect it that disappear once it grows to full size. The fry school in groups, probably for protection, but adults are more solitary.

What does it eat?

The ocean sunfish likes to eat jellyfish, but they will also eat other small fish, zooplankton, squid, small crustaceans and algae. They need to eat a lot of food to get so big, which is strange because they have a relatively small mouth for their size. They have fixed teeth in their mouth that they can use to break up harder food.

Fun facts about the Ocean Sunfish


For more about fish:

Brook Trout
Clownfish
The Goldfish
Great White Shark
Largemouth Bass
Lionfish
Ocean Sunfish Mola
Swordfish

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