Cusk-eels, also known as Ophidiidae, are a group of marine bony-fish that live near the bottom of the sea. The species Abyssobrotula galatheae is the deepest known fish on record, found at 8,370m (27,460ft) in the Puerto Rican trench.
Despite the cusk-eel's name, which refers to its eel-like appearance, it is not a true eel.
Appearance[]
The Cusk-eel has a long, slender body that can reach up to 2m long, though most species are under 1m. Its fins are continous with each other, forming a long, ribbon-like fin at the posterior of its body.
Behavior[]
The Cusk-eel is mainly solitary and tends to hide in structures or other marine animals. It feeds nocturnally on other bottom-dwelling species.