I do indeed have an update.
I got slammed w/work over the weekend and haven't had time to post.
The affected oebt female molted either saturday night or sunday morning after the h20 change cuz when I went to net her the next day the worm was gone. Also, there were two new molts in the tank sunday morning, one a blueberry and the other an oebt.
I couldn't find any evidence of a worm in either molt, but removed them anyway. Couldn't find a worm anywhere else either....sooo I decided just to keep an eye on the tank.
Later on Sunday afternoon, I noticed the worm on a blueberry female in exactly the same spot as the oebt--on the rostrum!!
It's on now I'm thinking and prepare the dip while I'm watching nascar/watching my daughter. I get back to the tank an hour or so later to get the blueberry and I can't find the worm. Confused (did I really see it there?), p.o.'ed I hadn't just netted her right then, I then start netting and checking every shrimp in the tank.
It has vanished. Can't find it. I don't know if the new victim shrimp cleaned it off, if another shrimp helped, or it was too weak to re-attach properly from the fenbendazole, or???. I am mystified/over-joyed/feel like I should have bought a lottery ticket that day.
The worm was not visible on the oebt's when I received them from the shipper. The tank they went into is my transition tank. It had at the time some wild tigers, the blueberries, a few crystals, a few amanos. The worm could have come from any of the wild shrimp in there very easily.
If the worm itself could be identified, it would be easier to know how it could have been vectored into the tank and in what form (egg, larvae, cyst, h20 contamination or transfer from source h20, etc.).
I did have a couple of mysterious tiger deaths two weeks or so before this, but can't imagine it not being visible on another shrimp because of the way it (worm) flipped around.
My berried blueberry birthed during the initial dosing of the fenbendazole. I thought that she had gotten stressed and dropped/ate the eggs. I have seen several babies cruising around the tank since. I found two dead ones under a leaf, but that has been it so far. Also, the berried oebt did not drop her eggs and still has them
The planaria are gone, the nuisance snails remain except for a few of the pond snails. I weighed my dose using a scale accurate to .01g.
All of the shrimp in this tank will be transitioned out to their homes after a new waiting period, and I will then change the substrate and sterilize the tank and start it back up. It's kinda funny how things work out sometimes. I have been wanting to change the substrate in this tank anyway, and now I have a real reason lol.