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.