If it IS a baby rope fish (or any other kind of 'eel' fish, excluding black kuhli loach) it will outgrow that tank many times over. I don't think there are any suitable 'eels' for a ten gallon, they all get at least a foot long, many can reach up to 3 feet.
forum community dedicated to tropical fish owners and enthusiasts. Come join the discussion about species,breeding, health, behavior, aquariums, adopting, care, classifieds, and more! Open to fish, plants and reptiles living in freshwater or saltwater environments.