What are the names of eel like fish?

Eel-like fish include species such as the true eels from the family Anguilliformes, which encompasses the common eel (Anguilla anguilla) and the American eel (Anguilla rostrata). Other eel-like fish include the lampreys from the family Petromyzontidae, and the knifefish from the family Gymnotidae. Additionally, the hagfish, part of the family Myxinidae, also exhibits an eel-like appearance. These fish are characterized by their elongated, serpentine bodies.