What happend to dotty back and damsel

[ilovefish]

This A.M. I found my dotty back and blue damsel dead on the bottom of my tank. What happend saltinity is great 1020. I just added a spotted hawk fish and a small tomatoe clown with bubble anemone. What could've have caused these poor things to die. I had the same two fish with all the other fish and they were fine. Could have the spotted hawk fish or little (very small) tomatoe clown took their poor lives, any ideas, please help.

 

[b_ball12_99]

I don't know about the attitudes of hawk fish but what are the other parts of your tank? All your reading, filtration, ls, lr, cc, other inhabitants, how long the tank been up, ect.