Flatworm?

[Crestline]

Are all flatwoms bad?

Redish in color in person. This is the underside of it on glass.

No flatworm predators in tank but always looking for an excuse for another fish.

Benign or destructive?

 

[WalkerLovesTheOcean]

That is an Acoel (Amphiscolops) flatworm. They're not harmful but can multiply quickly, or they will just dissappear.

 

[JustTechWriter]

I am dealing with a whole bunch right now. Gonna try flatworm exit before I bow into submission.

 

[NonstopSoda]

I am dealing with a whole bunch right now. Gonna try flatworm exit before I bow into submission.

Depending on tank size you could try a sixline or yellow corris wrasse or a possum wrasse. all of them love eating flatworms. Yellow corris is my favorite put get pretty big

 

[tbrown]

I got a pair of Springeri Damsels for flatworms. I had Ghost flatworms - saw 2, got Springers and haven't seen anymore since.