I have never seen a blenny like that real pretty what type is it ?. We have a bi color in our 55 gallon .
As you know one blenny per tank than again maybe not lol but with bi color 1 blenny per tank.
Our tank has 50lbs live rock but no corals just few small fish and feather dusters.
I am a big fan of blennies as tremendous personality . I love the colors on yours.
