Chromis swimming issues?

[Avengerx77]

I added 3 chromis about two weeks, first in the tank. One of them seems to develop a darker color in some places and about two days ago it started to swim facing the surface of the water in a corner of the tank. He is still eating well and from time to time swims normal. It now swims all alone while the other two still swims together.

Is this normal, is it sick? Could it be some agression from the other chromis? Tank is 130gallon.

 

[HumbleFish]

Might wanna research Uronema marinum. If the dark spots start to look like red sores then you've got a problem.

 

[Avengerx77]

If that is the case, is it something that will be moved to the other two fishes? If so, is it similar with ick that you need to leave the tank certain amount of time without adding any further fish until the parasite dies?

 

[HumbleFish]

If that is the case, is it something that will be moved to the other two fishes? If so, is it similar with ick that you need to leave the tank certain amount of time without adding any further fish until the parasite dies?

Personally, I've never had any success treating Uronema. It just seems to spread to other (but not all) chromis and those infected die. The good news is the disease seems to stay confined to damsels & clownfish (at least in my experience). But I wouldn't assume your chromis has Uronema until there are more visible symptoms.

Below is a sticky and an article you might wanna read on the subject:

http://reefcentral.com/forums/showthread.php?t=2388437

http://www.advancedaquarist.com/2007/10/aafeature1

 

[Avengerx77]

Thanks, the fish is a goner might have a couple of hours, it is lying on the top of the MP40, not swimming just breathing hardly. It's there a way to speed his passing or just let it be? Seems it was not a disease but merely aggression, seems chances are I will be left with one per other post I just saw on chromis. I am wondering if I should eventually take them out all if I am planning to put clownfish to avoid aggression between them and the chromis.