just an update, 7:30 am the next morning and he is still working on it. You would think that I don't feed the tank. By the way, thanks for the concern about the eel, but Jason is right about getting him out. Impossible!
That's awesome. I've never really seen a full grown male cobra before. I have a cobra pike at around 7." I can't wait until he gets bigger. Sorry about the fire eel though.