ID Please - Nudibranch? Cucumber? Sea monster?

[Lylelovett]

Hi all,

So I found this thing slowly crawling along the waterline tonight...

It's about an inch long, but stretches out a little longer and shrinks back a little smaller. It looks like it has some little feelers/antennae on the front.

I for sure did not bring it into the tank at that size, or of any sizes really. Must have been tiny/egg/larva/etc or I would have seen it. I don't add that much stuff, and not recently, so it must have been in there a while.

I'm just coming up on a year into the hobby, so I'm new to mystery creatures. But I was thinking a nudibranch or sea cucumber? Hopefully not something more sinister?

Any ideas?

Thanks for your help!
J

 

[redfishbluefish]

Oh Boy....that looks like a nudi to me....but I'm not good with these things. I'd pull it out now and hold it in a container for now. Let's get some more eyes on this that know a whole bunch more than me..... @KJ , #reefsquad

 

[Lylelovett]

Copy that.

The coloration of the "tentacle things" is like a hedgehog... Heck the whole thing looks like a sea-hedgehog, lol. Pretty cool looking actually.

Captured in a tub.

 

[saltyhog]

Definitely a nudi! Almost looks like a Berghia. Interested to see what others think.

 

[Crabs McJones]

Yup, nudibranch. Not sure what kind though. Better to remove just to safe.

 

[vetteguy53081]

+1 on nudibranch and here is my rule......

IF IN DOUBT, CHUCK IT OUT !!

Even if it were a berghia, I would rather take the loss on a worker than a colony being wiped out

 

[redfishbluefish]

Doing a quick search, these two popped up as possibilities.....bottom line, I'd pull it out (don't like nudi's)

Coryphella lineata

OR

Cuthona nana

 

[Katrina71]

I think nudis are beautiful, but if you aren't 100% sure...

 

[Lylelovett]

I think nudis are beautiful, but if you aren't 100% sure...

Yeah this is super cool looking!

Looking at the Cuthona nana, it looks nearly identical to some of those pics

Will make me sad to flush it. :(

 

[Lylelovett]

Yeah this is super cool looking!

Looking at the Cuthona nana, it looks nearly identical to some of those pics.

I just don't have ANY experience with nudi's and I'm just a beginner. :)

Will make me sad to flush it. :(

 

[Lylelovett]

Doing a quick search, these two popped up as possibilities.....bottom line, I'd pull it out (don't like nudi's)

Coryphella lineata

OR

Cuthona nana

Why don't you like nudibranch?

 

[redfishbluefish]

Why don't you like nudibranch?

With few exceptions (Berghia Nudibranch, as an example) they eat the good things in our tanks. Most are not reef safe.

 

[saltyhog]

Yeah this is super cool looking!

Looking at the Cuthona nana, it looks nearly identical to some of those pics

Will make me sad to flush it. :(

Hey if you were absolutely positive it was that one you could keep it......they eat hydroids!

 

[vetteguy53081]

Hey if you were absolutely positive it was that one you could keep it......they eat hydroids!

Without positive i. d. , not worth the risk of eggs (if not present already) and a tank wipeout
I’d rather have beautiful live coral than a Cute nudibranch

 

[sfin52]

They are beautiful creatures that is for sure

 

[sfin52]

I agree with Cuthona nana but its not my tank.

 

[ScottR]

Why don't you like nudibranch?

Each type of nudi has its own strict diet. One may eat aiptasia, one zoas, one montis, one sponges. If you can’t 100% positively ID it, you may notice that it munched on something you didn’t want it to.

 

[saltyhog]

Without positive i. d. , not worth the risk of eggs (if not present already) and a tank wipeout
I’d rather have beautiful live coral than a Cute nudibranch

Sorry, didn't put the emojis in....I was being sarcastic.

 

[Lylelovett]

Thanks for all your help. He went to live in the sewers with the alligators. :)

 

[KJ]

Hi all,

So I found this thing slowly crawling along the waterline tonight...

It's about an inch long, but stretches out a little longer and shrinks back a little smaller. It looks like it has some little feelers/antennae on the front.

I for sure did not bring it into the tank at that size, or of any sizes really. Must have been tiny/egg/larva/etc or I would have seen it. I don't add that much stuff, and not recently, so it must have been in there a while.

I'm just coming up on a year into the hobby, so I'm new to mystery creatures. But I was thinking a nudibranch or sea cucumber? Hopefully not something more sinister?

Any ideas?

Thanks for your help!
J

Google Janolus sp.