The Ribbon Eel are very cryptic in nature, They are extremely long, thinbodied with a broad dorsal and anal fin giving them a ribbon like apperance. They have delicate jaws with fan shaped nasal extensions.
As a Juvenile the Ribbon Eel is jet black with a yellow dorsal fin. As they mature to a length of around 65 cm, they transform into males which display a beautiful blue colour with bright a yellow jaw and dorsal fin. As they gain further mature, at a length of around 85cm they will further transform into females which display a yellowish blue to yellow body colouration.
The Ribbon Eel can be difficult to feed initially. They can easily escape out of smallest space from the aquarium. An aquarium with plenty of live rock for cover, and a tightly fit canopy is ideal. Most of the eels that are lost in an aquarium are due to poorly sealed tanks.
The Ribbon Eel is safe to house with most fish that cannot fit into the eels mouth. Overly active, territorial, or aggressive fish should be avoided as potential tankmates, as they will oftentimes pick on the ribbon like tail of the Ribbon Eel. Additionally, more pugnacious fish will make it very challenging to feed the eel properly. It can be housed with invertebrates such as soft corals, polyps, mushrooms, and filter feeders. These fishes prey on small crustaceans in the wild, so avoid small shrimp which will quickly be consumed by the eel.
The Ribbon Eel is a nocturnal predator, ambushing small fish and crustaceans. In the aquarium, it may have to be offered live foods such as ghost shrimp at first, but in time, will take frozen or freeze-dried krill, strips of fresh fish, fresh uncooked shrimp chunks, and other meaty foods. It can be taught to hand feed, using a feeding stick.