Villiform teeth are elongated teeth that are very long and fine and are used for stabbing and direction. They are more common on deep see fishes such as this black dragonfish: The moray eel is interesting in that its pharyngeal teeth are modified.

What are pharyngeal teeth used for?

These teeth assist in transport of food that, in these fishes, is the main function of the pharyngeal apparatus, accomplished chiefly by anteroposterior movements of the lower pharyngeal jaws. Prey is transported from the mouth to the esophagus with little modification.

What teeth are the incisors?

Incisors – The four front teeth in both the upper and lower jaws are called incisors. Their primary function is to cut food. The two incisors on either side of the midline are known as central incisors. The two adjacent teeth to the central incisors are known as the lateral incisors.