Eel or other ill eat you alive fish.

[Corbin]

yeah thats why im thinking more of a richardson moray, more aggressive stays small.
as for a lid, what do you think the best would be, good ol glass lid?
i was thinking of a steel mesh one, like ones for snake/lizards, and cutting it so its glass for most of it (as not to defuse light) and then use the mesh around back to cut room for my hang on skimmer/cords, or considering i ahve a AIO, just cut it and bend it so it dips in the water flush against the back, so then i dont have to make a lot of little cuts and would be safer.
what have you guys used?

[whatcaneyedo]

My 120gal is actually open topped. I do have a crown around the front and sides and plumbing over the back. In the 6 years I've had the eel it has never jumped out. Knock on wood. One of these days I need to make a top of some sort. I'm thinking of just using plastic mesh/chicken wire (sold at Crappy Tire) like what I've used over my frag tank to keep the wrasse from jumping out.

I guess like every fish they have their own personal habits. I've has ceriths, astrea, trochus, turbo, fighting conch, nassarious, abalone... and perhaps some other snail types. None of them were ever eaten by the eel.

Sorry I have no idea what its gender is. Is there an easy way to tell? I haven't researched into it.

If I was going to do a small predator tank I'd probably get a leafy scorpion fish Rhinopias. However they can be pretty pricy.