Every other wrasse has a minimum 3-4x mass and size ratio over six, so I'm not overly concerned. As I indicated, I think it's more the environment rather than the fish. I have 160 gallons and a maze of tunnels, caves and other places for it to explore - so there's never a dull moment (it's always on the prowl, hunting pests...).Hopefully yours stays submissive to your other wrasses and doesn’t turn on them one day.