I wouldn't fret too much if the stomatella doesn;t make it through the cycle. If you want more, my 20 is FULL of them. Anyone know of a fish that has a taste for stomatella?
BTW, not sure what that worm is... maybe a different pic, another angle, different lighting would help?
Stomatella are great tankmates...they eat film algae. I wish I had more of them.
The worm image is fuzzy, but it seems that the worm is a segmented worm. As long as it doesn't look "leech like" with a proboscis type mouth, you should be okay.
JD, does your little worm crawl on the glass and then all of a sudden go in reverse??? the reason I ask is that I have segmented worms that look like that (as far as I can tell) and they will cruise on the glass and then all of a sudden go in reverse.