Freshwater eels are: yellow eel (also known as field eel, blood eel, red earth dragon), bone eel, mountain eel, yellow eel, Bristol Yellow Eel, earth eel, moon eel (also known as Thai giant eel), green eel (also known as wind eel, flower brocade eel), red eel, Bengal snake-breasted eel, African snake-breasted eel, all of the above are living in the river, creeks, fields, freshwater lakes, ponds. Seawater eels are: sea eel (also known as sand eel, star eel), whip-tailed eel (also known as seven-gill eel, seven-star eel, eight-eyed eel), multi-banded serpentine eel (also known as ringed sea eel, zebra sea eel), jeweled sea eel (also known as peacock sea eel), yellow-tailed serpentine eel (also known as the yellow stripe naked thoracic eel, flower-finned naked thoracic eel, yellow-bordered naked thoracic eel), brown-spotted serpentine eel (also known as the snowy serpentine eel), black-spot naked thoracic eel (also known as the leopard sea eel, black-spotted sea eel, bean-dotted naked thoracic eel, oil cone), fine point naked thoracic eel (also known as leopard sea eel, black spot sea eel, bean-dotted naked thoracic eel, oil cone), fine point naked thoracic eel, black spot sea eel, black spot naked thoracic eel oil cone), fine-spotted naked-breasted eel (also known as rat eel, tiger eel, pig's-foot eel, money eel, oil cone), Java naked-breasted eel (also known as dogfish, wolfsbane eel, oil cone), white-spotted naked-breasted eel (also known as white-spotted naked-breasted eel, oil cone), corrugated naked-breasted eel (also known as sea yellow eel, oil cone), reticulated naked-breasted eel (also known as densely-netted naked-breasted eel, lightly-netted naked-breasted eel, oil cone), green naked-breasted eel (also known as giant moray eel, beautiful naked-breasted eel, oil cone ), Burns's Naked-breasted Eel (also known as Bush's Naked-breasted Eel, Big-eyed Naked-breasted Eel, Oil Cone), Dotted Naked-breasted Eel (also known as, Speckled Naked-breasted Eel, Oil Cone), and Lesser Naked-breasted Eel (also known as Dragon Eel, Oil Cone), which are all common varieties. However, many people confuse eels with eels, which are actually two different fish. The biggest difference is that those with ventral and pectoral fins are eels, while eels do not. Those species I mentioned above are without ventral and pectoral fins.