I caught my 6 inch fox face last night and transferred him to my QT tank. I did the drip method. I acclimated the water for almost an hour.

When I put him in the smaller tank and he laid on the bottom. Grasping for air. He was a strange color. I remember from transfers before he was kind of a drama Queen.

This morning the tank was murky the fox face buried himself under a large rock in the tank, My two clowns were dead, my mandarin goby, and my pseduchromis (sp) were all dead. Is there any way the fox face had a heart attack and released his poison.

I had a file fish two starfish and a BTA survive the event. I am pretty upset. Should I have known better?