White slug-like thing

[wwarby]

I’ve noticed this little critter on the glass of my tank a couple of times recently. It’s about an inch long and seems to just amble around slowly like a snail? Get rid or leave it alone?

 

[ISpeakForTheSeas]

I’ve noticed this little critter on the glass of my tank a couple of times recently. It’s about an inch long and seems to just amble around slowly like a snail? Get rid or leave it alone?

View attachment 2993371 View attachment 2993372

That's a nudibranch, probably a Dermatobranchus sp., but a top down pic of its back would be helpful for ID.

 

[vetteguy53081]

I’ve noticed this little critter on the glass of my tank a couple of times recently. It’s about an inch long and seems to just amble around slowly like a snail? Get rid or leave it alone?

View attachment 2993371 View attachment 2993372

Cant see clearly on phone screen but may be caulerpa slug. Remove and discard

 

[wwarby]

That's a nudibranch, probably a Dermatobranchus sp., but a top down pic of its back would be helpful for ID.

Thanks - I'd say this image of the species you mentioned is very close to what I'm seeing with my eyes but can't quite capture on my phone. I'll try to get a better picture if I can yank it out of the tank for a minute tomorrow, but assuming that's the right ID, should I keep it? I have inverts and corals that I don't want eaten, but I won't remove it if it poses no threat.

 

[ISpeakForTheSeas]

Thanks - I'd say this image of the species you mentioned is very close to what I'm seeing with my eyes but can't quite capture on my phone. I'll try to get a better picture if I can yank it out of the tank for a minute tomorrow, but assuming that's the right ID, should I keep it? I have inverts and corals that I don't want eaten, but I won't remove it if it poses no threat.

The Dermatobranchus genus is known for eating octocorals (soft corals, gorgonians, etc.) and/including GSP, so if you have softies/GSP, that’s likely a remove nudibranch.