Hahaha, this is a great question, and the answer for me is "yes"....
Both of my Rope Fish and my Betta will allow me to pet them.
The Beta comes to the top of the tank at feeding times and will wrap its' tail around my fingers.
The Rope Fish are simply playful and apparently enjoy being caressed.
Here's a couple of pics of my Rope Fishes (Sodom And Gomorrah)