I read that the Freshwater Moray Eel was a brackish water species and I was just wondering would it survive in a completely freshwater enviroment?
http://www.aquariacentral.com/species/db.cgi?db=fresh&uid=default&ID=0580&view_records=1
http://www.aquariacentral.com/species/db.cgi?db=fresh&uid=default&ID=0580&view_records=1