Pest ID

[Acrofiend]

What is this? Nudibranch? Sea slug? Flatworm? It has two antennas

 

[namfuak]

Can you take a picture with a sheet of white paper under the container? It's extremely hard to make it out with the background.

Is that a small shell on it's back and is it relatively fast moving? If so, it looks like a stomatella snail to me, but it's so hard to tell from the photo.

 

[Will Wohlers]

Looks like an elysia (spelling?) Species which are harmless but agreed better photos are needed.

 

[namfuak]

Looks like an elysia (spelling?) Species which are harmless but agreed better photos are neededi

You're definitely on the right track. After clicking on the picture and then zooming in, I can see that those are skin folds and not part of a shell.

 

[RedFrog211]

Yeah I agree- maybe Elysia crispata?
Nidibranchs get colors from their food, so if it’s yellowish brown, it most likely eats algae and detritus!

 

[Acrofiend]

Can you take a picture with a sheet of white paper under the container? It's extremely hard to make it out with the background.

Is that a small shell on it's back and is it relatively fast moving? If so, it looks like a stomatella snail to me, but it's so hard to tell from the photo.

 

[Acrofiend]

Yeah I agree- maybe Elysia crispata?
Nidibranchs get colors from their food, so if it’s yellowish brown, it most likely eats algae and detritus!

Thank you.