Greetings and a question regarding deaths while adding new fish.

[Myka]

Originally Posted by ReefDruid

As for the Brook, there have been no signs of discolouration, mucous or sloughing. Is it possible for Brook to kill something without any other symptoms than the respiratory distress?

It can simply looks like respiratory distress and usually clamped fins.

It does sound like pH shock too, but I've never seen pH shock from moving fish such a short distance. I've only seen pH shock when fish have been in bags for many hours (like overseas or out of country travel). Maybe for some reason the pH at your LFS is extremely low? pH shock is something that you would observe within 10-45 minutes of introducing the fish. They usually lay on their side gasping and will sometimes dart around sporadically, then lay on their side again. Clownfish aren't overly sensitive to pH shock - Foxfaces, Tangs, and Wrasse are.