Most predators, on land and in the ocean, have a relatively poor success rate when it comes to snagging prey. Even when they’re successful, there’s no guarantee they’ll get to savor their prize.
I don’t know whether this Gold Dust Day Gecko was the one that caught this moth because, an instant after the capture, two or three other geckos swooped down to snatch it. There was a flurry of bodies and this one emerged from the scramble with the moth firmly stashed in its jaws. This look suggests it was guilty of robbery.