1. Different families and genera: The species of eelfish and eel are quite different. Although they are all eels, eelfish belong to sea eels. They are eelfish of moray family and moray genus, but most people call them eelfish. Eel is a fish of Anguilla family and Anguilla genus, which are quite different from each other in species.

2. Different habits: The habits of eel scale fish and eel are also very different. Eel scale fish mainly live in seawater. Although they have migratory habits, they only enter warm sea areas when seasons change, so they cannot live in fresh water. Eels, on the other hand, mainly live in the waters where fresh water and salt water meet. They can live in both fresh water and sea water.

Eel refers to all eel fishes, and the range is relatively large. Moray eels mentioned above also belong to eel fishes. Therefore, the habits of eel fishes are different, and there are many species. Eels refer to a smaller range than eels, with only 18 species to be precise. Most eel species have similar habits, and the characteristics of each species are also quite similar. In addition, eels are also called eels in many areas, and this eel fish refers to eels.