thanks terry.
that's precisely why i had so much difficulty taking its picture.
guess i better release into the tank in the cover of darkness... in case it's being bullied by other fish.
thanks guys... did some quick reading on this fish... apparently not sort after by reefers, as it's cryptic and mostly always hiding.
there were 2 available, and i got 1... can't differentiate the gender... in case i got a pair of gay Dusky Brotulina of yellow eel goby .