Evelyn, I hope that is not the Betta that Caleb ate when he was younger ? I remember how horrified and disappointed you were when you fond out that your beloved fish was dead, and even worse, had been eaten by your grandson.
I always have loved bettas, too, but I don't think that mine ever came right up for food like yours did. that is really a friendly fish !
Years ago, when I was growing up, my mom had aquariums, and we loved watching the fish move around, especially at night when all the lights were off except the ones in the top of the aquarium.
She had a Clown Loach that was my favorite fish to watch. he would hide out most of the day, and at night he came out and often raced around the tank. His face looked like a tiny catfish, with those whiskers, and his body was long like and eel, and was whitish with dark spots.
You couldn't call him friendly, for sure, but he did have a lot of personality, and was one of my favorite fish to watch when he was out.