Firefish disappearing

[Octupus]

I lost two of my firefish in the past 3 days. The tank is 180gallon and I don't see any suspicious activities. i do have a flame angel, a purple tang, a sailfin tang and a percula clown. I have a pistol shrimp (could he be the assailant?). I have seen a crab in the tank (not sure what it is.. gorrilla?). i can't see any trace of the fish Thoughts?

 

[Tangee]

How many firefish were there in all? They will often pick each other off if you add a group of them. Ultimately there will be one sole survivor unless there is a bonded pair.

 

[OCDreefer]

They are REALLY good at hiding, not saying they are not dead, but I've thought I lost a firefish for like two weeks only to have them reemerge once I removed my aggressive clowns, so maybe there is hope!

 

[Octupus]

I put two (together) and did not have any before. they were swiming together and the next day one was missing... after 3 days the other one is gone.

 

[Octupus]

Thank you for keeping my hopes up i will take it for now.. but deep inside i think they are goners

 

[returnofsid]

Adding 2 firefish to a tank, even together, can be risky. I wouldn't be surprised if one killed the other.