At one time, I had a yellow coris....liked to jump.....rescued him several times and he was amazingly fine after being on the floor (how knows how long, couple of times I thought it was a goner)....One day, he did it while I was gone and I was unable to help it out.....It seems like every wrasse I have had has found a way to jump....Love wrasses, just dont keep any anymore....good luck. You might think about trying to enclose that canopy if possible