Help with New fish Dying

[Mark 75g]

I have a 175g reef system that has been up and running for about 1 1/2 years now. Fully stocked with sps, lps and sof coral. I keep adding new fish and they seedm to die after about a month or so.

I recently had a kole tang and a potters angel for about 1 month in my frag tank. They were doing fine ie eating looking healthy. I then added them into the main tank and about 3 weeks later they both died.

I have lost other fish as well over the last year- sailfin tang, another potters, anthias, and about 2 blonde naso tangs before the current one.

I am starting to think that one of the current fish is killing them.

Current stock
Yellow Tang- in the tank from the beginning
Blonde naso tang
Blue hippo
Bicolor Pseudochromis
Pair of Clown fish
6 line wrasse
yellow tail damsel

The blonde naso was the last fish added after the damsel.

Anyone have any thoughts or have been in this situation?????

 

[snorvich]

I have a 175g reef system that has been up and running for about 1 1/2 years now. Fully stocked with sps, lps and sof coral. I keep adding new fish and they seedm to die after about a month or so.

I recently had a kole tang and a potters angel for about 1 month in my frag tank. They were doing fine ie eating looking healthy. I then added them into the main tank and about 3 weeks later they both died.

I have lost other fish as well over the last year- sailfin tang, another potters, anthias, and about 2 blonde naso tangs before the current one.

I am starting to think that one of the current fish is killing them.

Current stock
Yellow Tang- in the tank from the beginning
Blonde naso tang Normally a gentle fish
Blue hippo can be a problem
Bicolor Pseudochromis can be a big problem
Pair of Clown fish
6 line wrasse For certain fish, can be a terror
yellow tail damsel

The blonde naso was the last fish added after the damsel.

Anyone have any thoughts or have been in this situation?????

 

[teishokue]

seems like ur tank is stable w/o new fish.

 

[Mark 75g]

Everything is great. The current fish look very healthy and eat like pigs. This is why I can not figure out why I keep losing new fish. I have noticed the Yellow Tang swims near the new fish and raises his fins but it does not seem like it stops the new fish from eating.