Here is where I read that... again I'm sure it's a tank by tank fish by fish thing... but would give me pause with a $200 fish that could end up looking like a $12 lawnmower blennyI've owned a super male before, it was called a stigmata blenny when I bought it. It's been my experience that the redline only shows when they're stressed. It's normal coloring is a bland dark, dusky color which it showed ever since the first day I introduced it to my tank.