Dr. Hart, an expert on anglerfishes, was sought out by the NY Times to comment on a newly published article in Journal of Fish Biology, where scientists discovered bizarre behavior by a genus of deep-sea anglerfishes: swimming upside down. Gigantactis deep-sea anglerfishes were documented several times in ROV footage and photographs eerily hanging upside down near the ocean floor or in the water column, the lure located on the top of their head hanging downward towards the sea floor. Dr. Hart and other researchers believe this behavior may allow the fish to capture prey more easily by diving downwards to catch prey attracted by the fish’s lure.

https://www.nytimes.com/2023/11/22/science/upside-down-angler-fish.html