flame goby almost gets eaten by brittle

my black brittle thats about 6 inches expanded was trying to wrap his
legs around the flame goby continually while the goby kept getting away
when he felt the tugging. but the goby kept coming back for more, and
wasnt even watching the brittle, like he was oblivious to this. Im
wondering how close this fish is to losing his life. its by far the most
powerful fish in the tank as judged by his lightning speed when it gets
a temper.