Very docile. I just lost mine, he was over 3 feet and I had him over a dozen years. He was about 19" when I bought him (from Flying Fish Express, before it was sold).
I called him Mr. Magoo because he couldn't seem to find his food unless I waved it in front of his face. I had him with fish as small as a royal gramma, and he never showed aggression. He DID clamp in a trigger once when they were going for the same food on the stick, but I think that was a mistake.
Make sure your rocks are sitting solid, better yet, secure them with cable ties or dowel rods. These eels are strong and clumsy, and can topple rock work. I fed mine shrimp, squid, clam, primarily. Also Ocean Nutrition gel cubes for variety. I avoided live food and fish flesh - I didn't want the eel to get a taste for fish or hunting live food. Though with the reputation zebra morays have, this is unlikely.
They are very hardy fish. Mine was the sole survivor of an Oodinium outbreak in 2005. I lost fish I'd had over 7 years!
Occasionally mine would fast for a couple weeks. And it never ate as aggressively as my Brazilian dragon moray, which out-ate the zebra at least 5:1, even though it was never as long.
You could get by feeding 2-3 times per week.
Good luck, and enjoy your eel!
