Chromis with growth on mouth

[mmbaba]

Hi all,

I have a cycled tank that’s reasonably new (second hand equipment, relocated and set up with orig sand and live rock etc, re-cycled).

I introduced three Green Chromis about 3 weeks ago. One of them is showing a small growth on its lower lip that I noticed today. The same is not present on the other two Chromis.

Incidentally, two of them are also showing scale damage, I assume that’s from scrapes with the rocks, I’ve noticed that they sleep in a very small gap between the back wall and a rock.

Any thoughts based on this photo?

Thanks in advance.

 

[Jay Hemdal]

Hi all,

I have a cycled tank that’s reasonably new (second hand equipment, relocated and set up with orig sand and live rock etc, re-cycled).

I introduced three Green Chromis about 3 weeks ago. One of them is showing a small growth on its lower lip that I noticed today. The same is not present on the other two Chromis.

Incidentally, two of them are also showing scale damage, I assume that’s from scrapes with the rocks, I’ve noticed that they sleep in a very small gap between the back wall and a rock.

Any thoughts based on this photo?

Thanks in advance.

Remember - the natural history of this species is to sleep in sharp coral crevices, so also doing that in your aquarium will not cause significant scale damage. Both the mouth issue and the scale damage can be attributed to fighting. Green chromis are odd in that they are a "schooling fish", but in small groups, they tend to fight. What other fish are in with them?

Jay

 

[mmbaba]

Thanks Jay, only a single yellow watchman goby in the tank (plus a couple of BTA).

 

[Jay Hemdal]

Thanks Jay, only a single yellow watchman goby in the tank (plus a couple of BTA).

Could it have run into a BTA?

Jay

 

[mmbaba]

That’s certainly possible, but I’m not surehow that would cause scale damage and the growth damage on it’s lower jaw.

I was just checking in here to see if that was a symptom of a common disease that I need to be aware of…