Weird orange string

Gianluca

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I noticed these weird worms? In my tank they eat food if I put it down there. They've recently been popping up all over the tank. What are they? And are they harmful?
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WalkerLovesTheOcean

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I think that is definitely possible, it looks similar to when I look up "orange Medusa worm" are they bad? Or just detritivores?
I have never had one, but what I have heard is that when they are alive they are fine, but when they die they supposedly release a deadly toxin into the water, which can kill fish, and any other living thing in the tank... That's what I heard at least.
 

vetteguy53081

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I noticed these weird worms? In my tank they eat food if I put it down there. They've recently been popping up all over the tank. What are they? And are they harmful?
8E7530D8-FC6F-451A-BB51-66996D621704.jpeg
8DB2F533-3923-48B4-B0BA-F0C0ACC2B32C.jpeg
1E0F8536-4FB8-4E97-8360-7F86890E0A0C.jpeg
Looks like a spaghetti worm which is reef safe
 

EeyoreIsMySpiritAnimal

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I have never had one, but what I have heard is that when they are alive they are fine, but when they die they supposedly release a deadly toxin into the water, which can kill fish, and any other living thing in the tank... That's what I heard at least.
Hair worms are sometimes called "medusa worms" but are not the medusas that become toxic.

Some sea cucumbers are also called medusa worms and *can* release toxins but likely not enough to take out the entire tank.
 
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Gianluca

Gianluca

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Hair worms are sometimes called "medusa worms" but are not the medusas that becomes toxic.

Some sea cucumbers are also called medusa worms and *can* release toxins but likely not enough to take out the entire tank.
That's super great to know and very relieving! Thank you!
 
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