The Black Ribbon Eel seen above is a juvenile. The Blue Ribbon Eel is bright blue with a yellow mouth and is the adult color of a mature male black ribbon eel. A female Ribbon Eel is yellow.
We do not recommend them for most aquarists!
These are probably the hardest eel to keep since they can be finicky eaters, often refusing food.The Ribbon Eel, Black Ribbon Eel, Blue Ribbon Eel should only be kept by very experience marine enthusiats as they are extremely difficult to acclimate to captivity. We have had success with only one! Getting it started on ghost shrimp and then guppies.
Maintenance difficulty:
The Ribbon Eel, Black Ribbon Eel, Blue Ribbon Eel is very difficult to keep. They are so difficult to keep, they are better left in the ocean! They are finicky eaters that need a lot of work to get to eat. Try all kinds of seafood, squid, shrimp, krill, and live food like guppies. They will also eat ghost shrimp if they are available.
Maintenance:
Feed all kinds of live fish and meaty foods. Use a poker if necessary at first to place the food right in front of their mouth. Don't worry if it doesn't eat for a while at first, they can go for several weeks without food (and often do).
Habitat: Natural geographic location:
Found in the Indo-Pacific.
Foods:
They feed mainly on small fishes in the wild with an occasional invertebrate.
Social Behaviors:
Sociable and peaceful, can be considered a community fish as long as the tankmates are not small enough to eat! Since its' mouth is fairly small, it is probably one of the best eels for the community aquarium.
---: Sexual differences:
The juvenile is black, like the eel shown in the picture. As they mature, the black will turn blue with the tips of the mouth and inside the mouth turning yellow. Apparently they will grow larger to become fully grown females which are a golden yellow color.
Breeding/Reproduction:
Probably not possible in the aquarium.
Several freshwater species of eels are known to lay their eggs in the ocean and die afterwards.
Light: Recommended light levels:
No special requirements.
Temperature:
No special requirements. Normal temperatures for marine fish is between 74 and 79 degrees Fahrenheit.
Length/Diameter of fish:
Ribbon Eel, Black Ribbon Eel, Blue Ribbon Eel adults can grow to 100 cm (36 inches).
Minimum Tank Length/Size:
A minimum 60 gallon aquarium is recommended.
Water Movement: Weak, Moderate, Strong
No special requirements.
Water Region: Top, Middle, Bottom
Will generally stay in the bottom. Will bury themselves in the gravel with only their heads sticking out.
here is some more info on them.
HTH
Mike