What is it or is it just me

[David Grubb]

Just noticed it today when,cleaning tank and changing water, good, bad, im screwed ? Its the brown thing

 

[Cryptocaryon]

Looks like nudibranch. Is it moving?

 

[David Grubb]

Looks like nudibranch. Is it moving?

Very slow but yeah I think so, good or bad

 

[Cryptocaryon]

Depends on the species. A quick google search may be In order to ID it. I would pull it out just in case.

 

[Cryptocaryon]

Could even be a flatworm, either way pull it out

 

[Barrett]

Looks like a flatworm

 

[Crabs McJones]

Looks like a polyclad flatworm, remove it.