Yellow Clown Goby, not so safe?

[born]

My clown goby leaves my feather dusters alone.

Originally Posted by SeaHorse_Fanatic

In the past, I've received clown gobies from friends after they started nibbling on sps polyps.

ya like ive seen him go after the slime before. But this colony was doing awesome when I took it from its original mother colony, then after a while ive seen it die more and more. Its not RTN or STN cause i've experienced that with some other frags and i dont see tissue falling off.

Think I should try catching him asap?