Yes. yes it is.
Another thing, is you need their trust. If they trust your hand being there... it is so much easier. I have some of my bettas follow my finger, which with that I can have them go through stuff, like hoops, and with food on my finger tip they can jump for food. It took a good year to have Spartan trust me completely enough that I could close my hand around him, and not have him freak out. THAT was pretty cool (best if you have bigger hads/longer fingers that'll fit around the betta without actually rubbing against them).
eventually Spartan learned to beg, as well. (nose to top, look at me, nose to top, look at me)