interesting.. my zebra weighs quite abit but he is roughly 3 1/2 - 4ft..
how big is the other fimbriated? same size? i'd suggest another smaller eel, but u know it better than i do, so thats a little sad to see you cant replace it.
i just dont understand the theory behind eels escaping, like i said my eels have never tried, but my zebra does get curious and stick his head out of the water, but as soon as it realises it cant breathe, it goes back under..
i guess its just one of those things we do not have answers for..!