I love blennys! I have a tribal blenny in my nano, he is pretty awesome but not very colorful. His face markings are pretty neat to watch, they appear and disappear so quickly. I also have a bicolor blenny in my hex tank. I dont like him as much, he is okay but always seems to pick on my snails. My favorite by far is the blue eyed midas blenny we have in our large tank. He is very sociable and always active. Love his colors and especially the blue eyes.
here is the tribal blenny with face markings
and the bicolor blenny