Where is the light organ located that the viperfish uses to lure unsuspecting prey?

Answer

At the tip of the first elongated soft ray of the dorsal fin

To attract prey, the viperfish employs a specialized anatomical structure consisting of an elongated, hinged ray on its dorsal fin. A light organ is situated at the very tip of this ray, which the fish can dangle in front of its mouth. By flashing this lure, the viperfish entices prey to approach close enough for a rapid strike, showcasing a distinct predatory adaptation separate from its defensive lighting systems.

Where is the light organ located that the viperfish uses to lure unsuspecting prey?
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