Is there a difference between acoel flatworms and ghost flatworms?

[stanleo]

I was playing with my microscope and found these ghost flatworms in my sump. I saw about ten but I'm sure there are a bunch more. I even saw one eat a copepod (missed it on video though). They are really quick moving things I didn't know that. And a few were big enough to see clearly with the naked eye. But I am wondering if there is a difference between the rusty red colored acoel flatworms that I find in my DT (though I couldn't find any today) and the white ones I just saw in my sump. I tried to google ghost flatworm (I think that is what these are) and acoel flatworms keep getting mixed it.

Acoel flatworm

Ghost flatworm

 

[Billldg]

#reefsquad, any ideas?