Duncan’s closed up

[nicks8201]

Hey everyone have a concerns about my Duncan’s. I got them about a week ago they looked like they were doing great and then today I had to move the rocks a little bit bc my goby went missing, and seems like it closed up and the mouth on all them are open my water parameters seem fine. Why is this happening? I posted 4 pictures first 2 are now and the other 2 were from yesterday
Calcium: 450
Alkalinity:10
Ammonia:0
Nitrite:0
Nitrate:10
PH: 8.2
Salinity:1.025
Temp: 78

 

[MaxTremors]

They’re just retracted from being disturbed. That’s not their mouth, they’re sort of turned in on themselves, it’s sort of like, for lack of a better word, foreskin. They should go back to normal in a few hours or by tomorrow.