Type of fish with big, scary, black-filled eyes; it can be any species of fish, but it's their solely black eyes which make them stand out from the crowd.
They're named after the button eyed character from the movie/book "Coraline".
Dude 1: Dude, did you see that black-eyed fish. Sick!
Dude 2: Yeah, it's a Creepy Coraline alright.