what is this????

[Linden13]

Was checking out my tank and saw this thing sliding around in cave. It's flat and close to 3 inches long. These are the best pics and videos I could get before it disappeared into the rock.

 

[Linden13]

On the top of the cave. Has spots

 

[Ef4life]

Looks like some type of flatworm.

 

[Linden13]

 

[Gumbies R Us]

Flatworm is my guess. I would try to remove that from your tank

Flatworms

I saw flatworms on the glass on my aquarium and not sure where they came from ‍♀️ I dip all my corals and I’ve not added anything new in several weeks. I have a flatworm treatment made by salifert, flatworm exit. It says it’s safe to use all with corals and fish but I’m still leery of using it...

www.reef2reef.com

Flatworm problems… Can I get rid of it naturally

I got some flatworm problems in my tank lately . There are many brown spots on corals. there are are 10-15 tiny red/ brownish ones on the glass. I have 300 g tank . High nutrient is a little problematic because I have a lot of fish overfeeding sometimes . I am afraid to use flatworm exit by...

www.reef2reef.com

 

[Linden13]

 

[MadreeferNJ]

I didn't think flatworms get 3 inches long, always thought they stayed small.

 

[Gumbies R Us]

I didn't think flatworms get 3 inches long, always thought they stayed small.

Actually, the polycladida species can get rather large, up to 3.9 inches

 

[Linden13]

Got the rock out it with it

 

[Tommy B]

Looks like a polyclad flatworm. nice job spotting it, these are great at hiding.

 

[Linden13]

Pericelis tectivorum, the GIANT Predatory Flatworm | Reef Builders | The Reef and Saltwater Aquarium Blog

Pericelis tectivorum is the name that was bestowed to a rare species of large flatworm that is occasionally encountered in reef aquaria and can really shock reefers who don’t know what to make of it.

reefbuilders.com

 

[Linden13]

Looks like this one. Lights just came on and was checking my sump. Happen to look up and saw this thing moving across the rock. Definitely used other words than what I should say on here lol

 

[Linden13]

Just an update got it off the rock.

 

[Linden13]

Anyone want this thing for some reason?