Sorry to hear that Steve.
I lost mine in hypo treatment about 3 weeks ago.
He was our favorites also and was one of my biggest reasons for going through all the trouble with hypo.I really wish he would have made it back into the nice clean display.But,I guess it just wasn't meant to be.
I'm not sure if a CBS can take down a Blenny.I do remember having a lot of comotion in the tank one night and my CBS had a grip on my blennies fin.
Took that CBS for quite a ride.lol