Finally decided to get a group of least killifish yesterday and i'm pretty excited about it

Please excuse the fact that all the pics here are crumby; all i'm working with here is a phone camera and these guys are so tiny and so fast, lol
Here's the tank as a whole:
The killis stuck in acclimation bag jail:
And freedom!:
As well as a bonus pic of a couple of the amanos in that tank, because they're much easier to photograph:
They're just sooo tiny, I'm totally enamored. I'd read somwhere that they're likely to be shy the first couple weeks in a new space, but my group already seems rather outgoing. If they is shy, I can't wait to see what "not shy" looks like

I am open to advice, just please be kind, haha