Why are the fangs of the Chauliodus genus considered non-retractable?
Answer
They are too long to fit inside the mouth and must curve backward
The genus Chauliodus is characterized by disproportionately long, needle-sharp fangs that are anatomically incapable of fitting entirely inside the mouth. Because of their significant length, these teeth must curve backward along the sides of the head. This specific dental arrangement is an evolutionary adaptation for impaling soft-bodied prey during quick strikes in low-light conditions, rather than for the typical biting or chewing functions seen in other predatory fish.
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