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Critter Identifier

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Hello everyone! While working at my lfs we found this bug in one of our saltwater reef tank filters. For the sake of just wanting to know what it is, I was wondering if someone could help me identify this. 

A slug? What kind? Ideas?






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Is this it?

Polyclad Flatworm – Not Reef Safe


Found this here: https://www.extreme-aquatics.com/707/saltwater/how-to-indentify-worms-in-your-reef-aquarium/


This is a very large, very predatory flatworm known to feed on snails and sometimes mollusks. I had several of these come in on a coral, and it took about every chemical in my arsenal to kill them. Once they make it in to the aquarium, they’re nearly impossible to remove.


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