Whitish, flat slug?

[MikeA]

ID please.

Seen moving about sedately on the glass before lights on this morning. Whitish/pinkish in colour and around 1.5" or just under 4cm long.

Not my photo, but the best I could find on the interwebs.

 

[Keenan]

Flatworm. I would recommend removing

 

[MikeA]

Flatworm. I would recommend removing

Never seen one that big and have not seen any others in the tank, ever. Will need to stake it out tonight.

 

[Keenan]

When they’re that big, chances are there may be just the one. Always better to check though.

Some can get rather large, and most are parasitic (although not all)

 

[azbigjohn]

Did it have a small shell, or widened area in the middle? That long sounds almost like the underside of a stomatella snail

 

[reef lover]

Polyclad flatworm...remove check calms and lps for more and eggs.

 

[MikeA]

Did it have a small shell, or widened area in the middle? That long sounds almost like the underside of a stomatella snail

I have Stomatella snails and this is definitely not one .

Polyclad flatworm...remove check calms and lps for more and eggs.

Checked a few times over night and didn't find any more. Will spend some time over the weekend searching for eggs.