Please Could Someone Identify This Larvae/worm?

  1. Poverestpedant Initiate Member


    My first thread as I've been scouring the internet, but still haven't found the answer. Could someone please provide an ID from the attached? It was trying to bury itself into the substrate and may have hitched a lift on a nerite snail as it appeared almost as soon as I added them, it could of course been a complete coincidence. Thank you in advance. 3834bb466bb47d0ae22c5317334353ae.jpg
  2. clarissasjh Member Member

    Looks like a kind of medusa worm to me

    If I'm not wrong they are a type of sea cucumber and is quite safe for your tank as they don't go on attacking other tank mates but quite vulnerable to predators though

  3. Poverestpedant Initiate Member

    Thank you for the reply. Sorry, I should have clarified that it's a cold water/freshwater tank.
  4. Raizinhell Initiate Member

    How the heck did that get in your tank?

  5. Poverestpedant Initiate Member

    I have NO idea! I can only assume it either came in as an egg or perhaps on the nerites. It was about 6-8cm long. As it was a UFO I deposited in a water butt as don't want to take any risks.

    Unfortunately I'd recently lost 10 RCS despite nothing being wrong with my water parameters. I hope it wasn't responsible.
  6. Caitlin86 Well Known Member Member

    That is creepy!!
  7. Discusluv Well Known Member Member

    Yuck! If I saw that I would be taking out my substrate and replacing it. Maybe screaming a little too. But, I'm kinda a woosey when it comes to creatures with that many legs.

  8. RyanLewis Member Member

    What the frick is that? xD
  9. Keystone Member Member

    Looks like a cranefly larvae to me
  10. DuaneV Well Known Member Member

    That's a cranefly larva. Coulda had a cranefly lay eggs in your tank OR it was a hitchhiker. Either way, he's pretty harmless. Toss him out.

  11. Poverestpedant Initiate Member

    Thank you for your help. Yes the patio window has been open during the summer so quite possible.