Royal gramma with fin rot or injury

[Solarfall]

This morning when I fed my tank I saw the Royal Gramma come out for some mysis shrimp and his dorsal fin looked rotted.
It doesn't look red or irritated or anything though, the fin is just missing some flesh and I just see bones there. Is this more likely to be actual fin rot or is my cinnamon clown possibly picking on him? He's eating just fine, so I think it's more likely an injury.
I'll try to get a pic tomorrow morning at feeding time since that's the only time he comes out.

 

[AdeptMrSniffles]

Sounds like he got busted up by your clown. You see actual BONE!?!?! I'd say you need to QT the guy until it heals. So the clown doesn't further injure that spot.

 

[Bifferwine]

If he is still eating, then he will likely be okay. But a picture will help so we can see how severe it is.

 

[dcantucson]

I would recommend removing him to a QT so he won't be an easy target. If his injury was caused by the clown then it is unlikely that the clown will leave him alone in his weakened state. JMO

 

[Solarfall]

Got a pic:

Unfortunately I don't have a QT tank yet. Unless I filled up my other 55g.....which I would would have to cycle etc anyway...... Maybe I could put him in the sump .

 

[dcantucson]

Wow! Your right that is a nasty wound. Looks like an eel took a bite outta him. Humm...

 

[daugherty]

thats a nice bite you can put him in your sump also

 

[Solarfall]

Actually I forgot to mention that I have an arrow crab, it doesn't move around much but it usually hangs out right by the Gramma's little cove.
I'm pretty sure he's the culprit now that I think about it because I've seen the gramma swim right by the clown and nothing happens. But the crab pokes around at anything that comes near it.

 

[dcantucson]

It must have held him down; sure did a number on him!

 

[winyfrog]

If you add vitamin C to his food it will help improve tissue growth so that he can recover better.

I can't see the pic, but from the sounds of it, I would be surprised if it was from the arrow crab.

 

[Bifferwine]

Yeah pic has been removed. Arrow crabs have been known to attack fish, so it is a possibility.