What? Looks like a large Nudi or some kind of snail?

[sayitfast]

So I'm sitting here in my office no lights and I glance at my nano tank and I see what looks like a big white spot.... I thought it was some kind of sponge. I put the iPhone light on it and it looks like some kind of shell-less snail but pretty big... I would say 2 inches long and a solid inch wide.

I tried to get some video but its not so good. I did not get the head he went behind a rock. I did see the head and it looked like two antenna were there.

Hopefully someone will be able to to ID from the video but its pretty bad... I will be on the lookout for this guy in the future. He most likely has been in there for sometime and has caused no issues. I would really like to know what it is.

 

[Cnidoblast]

Polyclad flatworm perhaps?

 

[sayitfast]

Polyclad flatworm perhaps?

I think you nailed it... looked exactly like this pic when I first noticed it. I wonder how long that thing has been in there. Seems to be eating well.

 

[Cnidoblast]

They are known predators of things like snails and whatnot -- interesting how it seems to do ya no harm

#reefsquad

 

[sayitfast]

They are known predators of things like snails and whatnot -- interesting how it seems to do ya no harm

#reefsquad

I am missing two Turbo snails and my other snail count seems low. I do see my Nassarius snails out and about. I put in a large FrogSpawn the other day I wonder if he came in on that. I did dip it but I watched some videos on YouTube and they apparently can survive some pretty strong dips. I'm going to make a home made trap see if I can catch it. Until then not sure I will sleep...

 

[Michael Cronmiller]

Found something similar in my tank recently, but it has little spots all over it. Only saw it for a moment but slipped out of sight... following along.

 

[sfin52]

There are people who want these things

 

[sayitfast]

There are people who want these things

If I catch it alive they can have it...

 

[Potatohead]

There are people who want these things

Yeah, they are called weirdos

 

[Maritimer]

I've recently found two of them in my tank, which came in on maricultured liverock. Make sure to remove them gently and in one piece, as these guys have astonishing powers of regeneration.

~Bruce

 

[ItsAName]

Whoa, that's truly amazing that something that big has been living in your tank and has been hiding so well. Even though it's an unwanted worm, finding something like that always fascinates me and keeps this hobby endlessly interesting.

 

[sayitfast]

I'm currently standing guard... no sign of him yet. If I cannot grab him tonight I'm going to try the soda bottle trap idea.

 

[NowGlazeIT]

So I'm sitting here in my office no lights and I glance at my nano tank and I see what looks like a big white spot.... I thought it was some kind of sponge. I put the iPhone light on it and it looks like some kind of shell-less snail but pretty big... I would say 2 inches long and a solid inch wide.

I tried to get some video but its not so good. I did not get the head he went behind a rock. I did see the head and it looked like two antenna were there.

Hopefully someone will be able to to ID from the video but its pretty bad... I will be on the lookout for this guy in the future. He most likely has been in there for sometime and has caused no issues. I would really like to know what it is.

I am blown away by how magnificent and creepy that thing is!