is this a pest?

[jpa14]

saw this tonight anyone know what it is and is it bad to have in a sps tank

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[Pife]

It looks like a picture of a coral rtning. I see no pest from my phone.

 

[vuqchu]

Looks like a polyclad worm. Will kill snails and clams. I have not had it with acros in the past so no first hand experience with acros and polyclad flatworm.

 

[jpa14]

I saw this on a snail I'll get it out. The sps in the pic is fine. had an alk swing a while back and that one is recovering.

 

[kainic]

Looks like a polyclad worm. Will kill snails and clams. I have not had it with acros in the past so no first hand experience with acros and polyclad flatworm.

+1 on polyclad worm ID. Won't touch your corals but will decimate your snail and clam population.

 

[dendrite]

actually had one kill a small tuxedo urchin. Had to lie in wait for two weeks before I could ambush it. They can move fast and hate the light. I found one more several weeks later hiding among acropora. I'm not sure but I think that if you don't get the whole flatworm the part remaining can duplicate

 

[jpa14]

At least I know what's be happening to all my snails.

 

[Zacktosterone]

wild it totally is a polyclad worm!! how rare is that