Spotted Moray - Oceana

Marine Life Encyclopedia

Ocean Fishes

Spotted Moray

Gymnothorax moringa

Distribution

eCOSYSTEM/HABITAT

Coral and rocky reefs and associated seagrass beds

FEEDING HABITS

Foraging predator

TAXONOMY

Order Anguilliformes (true eels), Family Muraenidae (morays)

 

Observers typically only see the head and a small portion of the body, however, sticking out from a hiding place in the reef. Besides the occasional sick or wounded fish that wanders past their burrows, spotted morays do much of their hunting on the move, at night and during the twilight hours. They are also occasionally active during the day, but their poor swimming ability puts them at risk of predation by larger fishes, including some groupers and sharks.

Spotted morays, like most morays, have poor eyesight and rely heavily on their sense of smell. For that reason, it can be quite easy for SCUBA divers to approach these fish, but caution should be taken, as the spotted moray’s bite can be strong. In amazing recent research, scientists demonstrated how morays use a second set of jaws in their throats to manipulate food that they have captured. Morays are unable to create suction with their mouths, so their prey has to be manually pushed to the back of the throat, something that is difficult to do without limbs. On land, snakes have a similar problem, but they are able to unhinge their jaws, one at a time, to “walk” their mouths down the prey’s body. Morays do not have that ability, and instead use their second set of jaws to manipulate their food. Attached to the esophagus via strong muscles, these “pharyngeal” jaws reach forward into the mouth, grasp the prey item from the oral jaws, which release at that time, and pull it back to the muscles of the throat. Using slow motion cameras, scientists have been able to video the exchange of food between the two sets of jaws. X-ray images of morays clearly show the pharyngeal jaws and highlight their similarity to the oral jaws.

Though spotted morays are rarely eaten by humans – typically only after being accidentally caught in fish traps – there is not a targeted fishery for this species. Population trends are not currently known, but there is no evidence to suggest that human activity threatens the spotted moray. However, as human activity does continue to threaten their habitat (coral reefs), it is important for scientists to continue to research this and other species, to ensure that populations are in fact stable.

Engage Youth with Sailors for the Sea

Oceana joined forces with Sailors for the Sea, an ocean conservation organization dedicated to educating and engaging the world’s boating community. Sailors for the Sea developed the KELP (Kids Environmental Lesson Plans) program to create the next generation of ocean stewards. Click here or below to download hands-on marine science activities for kids.

Kids Environmental Lesson Plans

Additional Resources:

IUCN Red List

 

Get Involved

Donate Today

SUPPORT OUR WORK TO PROTECT THE OCEANS BY GIVING TODAY

With the support of more than 1 million activists like you, we have already protected nearly 4 million square miles of ocean.

TAKE ACTION NOW

Support policy change for the oceans

Decision-makers need to hear from ocean lovers like you. Make your voice heard!

VISIT OUR ADOPTION CENTER

SYMBOLICALLY ADOPT AN ANIMAL TODAY

Visit our online store to see all the ocean animals you can symbolically adopt, either for yourself or as a gift for someone else.

DOWNLOAD OCEAN ACTIVITIES

HELP KIDS DISCOVER OUR BLUE PLANET

Our free KELP (Kids Environmental Lesson Plans) empower children to learn about and protect our oceans!