Flame Hawkfish distressed??

[GarrDen79]

I need help. I have had my flame hawkfish for 3 months now. He was added to my tank that already had a lawnmower blenny and 2 clownfish. Took a little while to get comfortable, but once he did he hung out in the rocks and was engaging. 3 weeks ago I added bicolor angel and at first things seemed fine. The angel is a constant swimmer and hawkfish would move to new spots to get comfortable. But the last week I'm seeing less of the hawkfish, when visible heis perched on the the thermometer or refugium pump. At last feeding he didn't swim out to catch brine shrimp. Now this morning laying on sand by front glass, and showing signs of what seems to be labored breathing. Is there anything I can do to help, if there is an issue?