Maybe! I had the 2liter with food in for about an hour. The wrasse got halfway inside a few times but everytime he got super close my stupid blenny would try to fight and spook him off.I haven't..
I have a NYOS fish trap, but it has successfully caught my blue hippo, not the wrasse.
Now I'm kind of wondering if I did make a somewhat sizable trap, maybe I throw in a lot of my sand and a couple of the corals he likes to flip, if he'd get in that.