Like. Devil knife eat fish eyes because like, devil knife fish also called black feather fish, scientific name line plume electric eel, benthic nocturnal fish, no dorsal fins, black shiny body, poor eye sight, basically has been degraded, the physical appearance of cute, swim elegant and elegant, this fish night activities, favorite bite the eye of the other small fish, the surface of the cute, in fact, is very powerful, the rooster fish have to let it three points.