Help with identifying problem

[schlitz]

See picture. On Christmas Eve I lost my lionfish. Two days ago, two Clarkii Clowns and Koran Angel died. Yesterday, my Humu Trigger died. My Niger Trigger which looked perfect two days ago looked like this last night. Any idea what happened? Whatever it is, it is fast acting. I also have a Red Coris Wrasse that was ok two days ago but he burrows himself in the sand in the evening so I could not see how he was doing last night. Any help would be greatly appreciated!

 

[T-J]

I'm not an expert, as I've never dealt with this disease, but isn't skin sloughing off a sign of Brook?
When was the last time you added something to the tank?

 

[schlitz]

The Niger Trigger and the wrasse were added about 5 weeks ago.

 

[Jay Hemdal Verified Community Expert]

While that does look like Brooklynella, it would help to have more background information. Take a look at the second sticky down at the top of this section - it gives advice as to other information that is helpful in trying to determine what the issue is.
I hate to be a downer here, but once a fish disease issue has begun to cause fish deaths in a tank, it is really difficult to stop the problem without more fish dying....
Jay

 

[schlitz]

Update: Niger Trigger is most likely dead but I can't find the evidence. The wrasse came out yesterday and looks completely normal. I changed the filter bags, cleaned the skimmer and did a water change thinking that couldn't hurt. I ordered some Ruby Reef Rally to treat the tank but it may not arrive until Monday. Should I do a freshwater dip on the wrasse if I can catch him?
Also, does Brooklynella affect the hermit crabs, snails and urchin I have in the tank?