That was the other name I saw also.I had them back in the late 80’s another name for them was Sicilian worm eel
“stay fishy “
Hhhmmm yeah I'm definately gonna hold off on getting one until i get the bigger tank I am currently hunting for.GOOGLE can be a good starting point. Not an end point, but at least a start. Rubber Eel is not a fish, it is an Amphibian, or more specifically, an aquatic Caecilian. Lots of things are called "Eels", so you have to be careful what you are getting. Gets fairly large as I recall seeing the common species over 18 inches in stores.