Yes its covered thanks and thanks for input was wondering cause Blenny is small about half the size of the Jawfish didn't want to take em out of quarantine before I was sure they would get along.
The truth is you won't know until you try it. They can share similar behavior which in thinking could possibly cause aggression but I would try them out. I have always experienced increased aggression in my nano tanks..
As long as your tank is covered you should be fine.
I had the two together a few years ago so you should be fine . But like stated before no two fish are alike just because my two got along doesn't mean your will. But they should be fine...