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Most fish species with pharyngeal teeth do not have extendable pharyngeal jaws. A particularly notable exception is the highly mobile pharyngeal jaw of the moray eels.These are possibly a response to their inability to swallow as other fishes do by creating a negative pressure in the mouth, perhaps induced by their restricted environmental niche (burrows) or in the air in the intertidal zone. [10]
It has rather small eyes positioned at the end of the short snout. It has numerous and short, sharp teeth inserted into a large and profound jaw that extends back into the head. In addition, there is a second jaw, the pharyngeal jaw located further down the throat, used to capture and transport the prey into the throat.
The jaws of the Kidako moray, or moray eels in general, hold a dual-jaw system for feeding. [10] They primarily use the oral jaws to deliver prey into the esophagus with sharp and piercing teeth. The teeth are curved backward and point towards its throat to avoid prey coming back out of its mouth. [ 13 ]
The hookjaw moray, bowmouth moray, or Bayer's moray (Enchelycore bayeri) is a moray eel of the family Muraenidae. It is found throughout the Indo-Pacific as well as in the Red Sea. [1] [2] Like other members of the genus, the hookjaw sports curved jaws and rows of large, dagger-like teeth.
Moray eel jaw anatomy In addition to the presence of pharyngeal jaws, morays' mouth openings extend far back into the head, compared to fish which feed using suction. In the action of lunging at prey and biting down, water flows out the posterior side of the mouth opening, reducing waves in front of the eel which would otherwise displace prey.
Gymnothorax melatremus, the blackspot moray, dirty yellow moray or dwarf moray, is a moray eel from the Indo-Pacific East Africa to the Marquesas and Mangaréva, north to the Hawaiian Islands, south to the Australs islands. It occasionally makes its way into the aquarium trade but still being rare to find.
The Indian mud moray eel, (Gymnothorax tile) is a moray eel found in the western Pacific and Indian Oceans. [2] It was first named by Hamilton in 1822, [ 2 ] and is also commonly known as the freshwater moray or freshwater snowflake eel .
English: Moray eels have two sets of jaws: 1) the oral jaws that capture prey; and 2) the pharyngeal jaws (similar to the jaws of the monster in the movie Alien) that advance into the mouth and move prey from the oral jaws to the oesophagus for swallowing.