Does Smiling Fish have burgers all the time, or just at lunch, or

Or is there a magic word?
The reason I ask is that hoping to try the famous Smiling Fish, my son and I went there late one afternoon a couple of months back. The menu selections looked fantastic to me, but not to the 13 year old. I asked about burgers or chicken fingers for young people, and the waitress looked at my young teenager and said, "well, only if they are little." I wasn't going to pay $15 - $20 for something he won't eat (yeah, I failed in the not-raising-a-picky-eater department), so we ended up leaving.
Also, my office is ALWAYS on the lookout for burgers, and the closer, the better.