losing fish

[aravindk]

In less than a week I lost an anthias, two chromis, one royal gramma and today I lost a clown. Not sure where to look for the problem.

A week ago I bought an anthias, five chromis, a cleaner shrimp from a lfs. Could this be a parasite from that bunch? What are the symptoms?

Two days ago, I moved around few live rock. The sandbed was largely untouched. Would moving liverock cause an issue? Also I changed the location of a powerhead. Could that be an issue?

Any idea where I begin looking for a possible problem?

 

[snorvich]

What else is in the tank? How did the fish perish? How was their behavior before perishing?

 

[aravindk]

i have some corals. I have some more fish. couple of tangs, another clown, two bangaii cardinals and two more chromis. The fist last I noticed their body is hardened and seem them in a corner of the tank. The tank is a 180 gallon. Other fish seem to be fine. Dont see any stress or anything.

 

[snorvich]

Crabs? Shrimp?