This is the Prickly Dreamer anglerfish, Spiniphryne glandisfenae. This individual was captured in a trawl between 600 and 200 meters depth in the Gulf of Mexico, 2016. Female deep sea anglerfishes are predatory, luring their prey with a bioluminescent bulb (an esca) at the end of a long rod (an illicium), which is a modified fin ray. Impressive teeth are used to impale and hold any prey item that moves in to investigate the glowing lure. The lure is filled with bioluminescent bacteria, which live in a symbiosis with the female anglerfish. Image courtesy of the DEEPEND project.