No prime. I did the same thing with a batch of fry last year. Forgot the prime and nearly wiped out 40 fry.
I had to quickly move them into their parents tank while I tested the water. I have a well and my water previously had no ammonia in it, then we had a ton of rain and it must have leached chemicals from the fields into the well because my ammonia was maxed out coming out of the tap. Pretty scary. I stopped adding prime months before that so I have very little on hand. Now I use it ever time regardless of the ammonia reading out of the tap.
The little guys are getting bigger
seeing any white seams yet?
I can only see a slight hint of dark on the edges of my fry. No white from what I can tell.