Update on ribbon eels: After keeping one for 6 years I discovered that if you allow them a hiding tube that they can fit their whole body into, they will eat most of the time. Took a few years to figure out why, but it became apparent: They know they are long and can be bitten in half easily, so if they are not hidden in a dark tube they will be too scared to eat.
So, of all the people who got a ribbon eel since then, and a tube (like 3/4" pvc) longer than the eel, almost all of the eels started eating (silversides, mollies, etc, fed on a stick).
Unfortunately the escape artist part is still true. Open-center tanks are ok however (euro rim all the way around), because the eel only slides up the walls and never just jumps up out the center of the water.
So, of all the people who got a ribbon eel since then, and a tube (like 3/4" pvc) longer than the eel, almost all of the eels started eating (silversides, mollies, etc, fed on a stick).
Unfortunately the escape artist part is still true. Open-center tanks are ok however (euro rim all the way around), because the eel only slides up the walls and never just jumps up out the center of the water.