Yes, our "normal" reef amphipods and such, The pod population in there is low as I had been harvesting them once a week or two. No mysis in there.
Looking at notes, I see I received the 3 cuttlefish hatchlings on Dec 21 and had 3 more hatched by the 22nd, which were slightly smaller. Christmas day was the power outage that allowed one to escape. I believe it was one of the small ones. Now I am even more amazed that it lived in the sump, and stayed in the refugium chamber from 3 days old to day 50.
I found a dead one on Jan 7.
It is also interesting that they do not seem to get overly freaked out about being harassed, caught, and transferred. At least it does not affect their appetite or willingness to eat. I watched a friend catch one, (his sump escapee) put it in a 500ml beaker, put a few mysids in there and the cuttlefish began picking them off right away.
So today I record 2 - hatchlings at 55 days old or 8 weeks, and 3 maybe up to 1 week older.