Tessalata eels are awesome! The way the color shimmers along with the neutral black and whites is sick.
I also love the green moorays.
Shout out has to go to the wolf eel, I had one jump out of the tank sometime Friday afternoon and I didn't find it until noon on Saturday, he was half stiff and covered in old carpet fibers and dust, I popped him back in the tank and he started breathing, two days later and no ill effects. Went on to live years, I love active fish you can't kill!!
Last but not least, the Snowflake mooray is a great fish for anyone starting with eels, they stay relatively small for an eel, and aren't too aggressive to fish or your hand.
Eels rock, and they make tasty sushi too.