While not as flashy as some of the ribbon eels, Pseudechidna brummeri is easy to keep. The photos you see on the net never capture the metallic silver and electric blue of the actual animal, they are spectacular eels. They eat shrimp, either dead or alive, and mine would eat nothing else, even though I tried a great variety of possible foods. I kept it for several years, then donated it to a local school when I moved.
Cheers,
Don