I have 2 scooter blennies and I agree, they are great fish. To ensure they will thrive, have plenty of LR in your tank to provide an adequate pod population. Also, a nice 3-4" dsb will make them happy as can be cuz they love to bury themselves at night. Very peaceful fish, love to roam around the LR picking at pods and you can even treat them to some brine...mine come swiming up to the top when I am tossing brine in. If your live rock doesn't have a very strong pod population, go to a local fish store and ask them for some "sludge". This is the muddy residue in their LR tank (the stock they sell). Sludge usually has an abundant pod population and that will help boost your tank level. Place the sludge behind your current LR cuz it is rather nasty looking but FULL of food for blennies.