id please

[daveM100]

Some kind of sea slug? Looks like a shell-less nassarius snail. It's about a 1/2-3/4 inches long.

 

[daveM100]

Anyone have an answer?

 

[Zaccolwlell]

Possible stomatella

 

[Betta132]

What does it look like from the top?

 

[daveM100]

kind of rounded on the top side, doesn't look like it had any type of shell

 

[pagojoe]

It's not a Stomatella. It would help a lot if we could see a pic from the top down, though.

 

[daveM100]

as soon as i can find it again i'll get another pic, so far i havn't seen it since last night.

 

[pagojoe]

Roger. In any case, it's almost certainly not a bad guy. I thought I knew what it was, but the dark line in the middle of the head is something that I couldn't match. It doesn't have the characterstics of any of the pests that I know, in any case.



Don

 

[daveM100]

Finally came out again, here's a couple top shots.

 

[daveM100]

Just a bump for Don, hoping he can id now with these photos

 

[pagojoe]

Well, you got a nice "butt" pic for me, lol. It does help narrow down the options. I'll be bock...

 

[daveM100]

lol he/she wouldn't crawl the other way! Fast little bugger to.

 

[daveM100]

Any luck with this little guy

 

[daveM100]

I think maybe this guy, California White Berthella (Sea Slug), pic looks like it.

 

[daveM100]

lol am I right or wrong. Another bit of info I thought of, I know this guy came with my replacement CUC, the third mantis shrimp I caught in my tank destroyed the last. The little guy managed to hide from me for 8 months, never knew he was in there till he finally showed himself, I'd been wondering where everyone had gone! And the new crew came from Florida and that California White Berthella's range I've read does not extend there?

Description: This is one of only two species from Order Notaspidea found in this area. Although it looks like a nudibranch, it does have a thin, white internal shell (easier to feel than to see) which extends at least 1/2 the length of its body. It has lateral sheetlike extensions of its body (mantle) like a sheetlike flap above the foot, and a single (prominent) gill on the right side of the body between the mantle margin and the foot (photo). The rhinophores are rolled and emerge from under the flap in front (photo). The color is translucent white, cream, or orange with opaque white spots, and often a thin white line around the border of the dorsum. Length up to 8.5 cm, but usually 2.5 mm or less.

Geographical Range: Point Craven, Alaska to Coronados Island, Baja California

 

[pagojoe]

I thought it was a Berthella or Berthellina all along, but I've looked at a bunch of pics and can't find one with the central structure (dark line) on the head shield?

 

[daveM100]

Lol well I have no idea but it doesn't seem to be bothering anything, just shows up every 2 days or so for about 20 mins then goes back to my rocks.