White Flatworm?

Discussion in 'Fish and Invertebrates' started by MolaMola, Dec 10, 2016.

  1. MolaMola

    MolaMola Supporting Member

    Last week we noticed whitish flatworms slithering on the glass of our frag tank that contains just sand, rock, snails, urchin and a couple frags from the fragging workshop. Wondering what they are and if people have had any negative experiences with them. Also wonder where they came from, which I know is impossible to know. There are also some very tiny worms that under the microscope look like mini polychaete worms, plus a big gang of running and swimming tiny shrimp which is weird because the rock has been in there for a few months and it's been at least four months since my lone peppermint shrimp went missing in the DT.
    Here is the best pic we could get of magnified flatworm:
  2. My understanding is the white ones are harmless and will eventually disappear. Also, Six Line Wrasses love them.
    MolaMola likes this.
  3. Flagg37

    Flagg37 Colorado member

    That's what I found as well. Red = bad though.
  4. Ibn

    Ibn Supporting Member

    Harmless from my experience. This one was a decent size that came and went.
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  5. Flagg37

    Flagg37 Colorado member

    Is that a nassarius snail next to it?
  6. RandyC

    RandyC Supporting Member

    I'm guessing that's gotta be a Cerith Snail
  7. Ibn

    Ibn Supporting Member

    Dwarf Cerith. Baby there at ~1/8".

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