The flashlight fish is not alone in using bacteria as light factories. Similar organs housing bioluminescent bacteria are found in deep sea anglerfishes and ponyfishes, too. In fact, a 2016 study ...

Flashlight fish (Anomalops katoptron). The torch-like organ can be seen under its eye. (D. Gruber, 2019) (CN) – While most fish tend to disperse in dark waters, scientists have discovered flashlight ...