Bluestriped Fangblenny (Plagiotremus rhinorhynchos) ミナミギンポ
The Bluestriped Fangblenny doesn’t always have blue I have read that it can change colors. I am not sure if it can go back and forth or if it starts out blue and turns white.
This Bluestriped Fangblenny lives up to its name. They mimic cleaner wrasses and take bites out of fish instead of cleaning. Juvenile cleaner wrasses have blue stripes.