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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]
Monognathus, or onejaw, is the only genus of the family Monognathidae of deep-sea eels.The name comes from the Greek monos meaning "one" and gnathos meaning "jaw", a reference to the large mouth in comparison with the rest of the fish, and also the absence of an upper jaw (maxilla and premaxilla bones are absent).
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.
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 ]
Ilyophinae eels are caharcterised by having a lower jaw that is shorter than the upper jaw. In most taxa the upper body lacks scales and in some Dysomma species as well as Thermobiotes do not have a pectoral fin. They have depressed, relatively rounded heads with some rather long teeth. [1]
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 .
The Javan rhino (Rhinoceros sondaicus) once roamed across many countries in Southeast Asia. Around 2,000 years ago, they were still common in many parts of China. Around 12,000 years ago, they ...
The undulated eel and several other species of eels (puhi) are featured in many Hawaiian stories as common ʻaumakua, thought to be ancestors protecting families. [5]This eel is known as laumilo or "milo leaf" from the way it swims similar to blown leaves of the milo tree, it itself is considered a guardian for the tree according to the Kumulipo.