I have owned 4 of these fish, 2 in the past and 2 presently. All 4 ate frozen food.
IME they all will, with a little work. I use a turkey baster with a 18" piece of ro/di line attached, that way I can direct feed them in areas where my other fish cant reach. My female is so used to this she heads for the spot at feeding time.
The most recent was a male about 3"... biggest I had ever seen!! I saw him in Fins about 6 months ago, they practically gave him to me because he was soo skinny. They didn't expect him to make it. 2 weeks later, when I went back to Fins, they didn't believe me when I told them he eats mysis.....lol.
Every night, just before lights out they "dance" at the surface. I've seen eggs a couple of times but I don't have the means, yet, to deal with it.