What size is the tank? It might be a factor.
I think that some fish jump, not to jump per se, but to just exert a huge burst of speed (I'm sure wrasses are in this category). In the ocean, this just takes them somewhere else. In our tanks, either they hit the rocks, the walls, or they head a little bit upwards and ... out they come.
I had a pair of bluesided fairy wrasses who were so jumpy that so much as someone walked by their tank, they'd be in the overflow. Usually they would just jump their way out of the overflow on their own.
This worked out well for the most part until one day, when I was on vacation, my tanksitter forgot to close the hood one night after feeding ... both of them jumped out that night.
Buh.