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View Full Version : Sea Slug ID Please



Rob
09-01-2006, 01:27 AM
Ok folks, my turn for some help...

found this critter in my fuge crawling around on my macro algae. some type of sea slug

though this short video was better for an ID than pictures

Video is about 8 MB, and a bout 1:30 long

click here for video
http://www.talkingreef.com/misc/SeaSlug.m4v

Rob
09-01-2006, 01:46 AM
closest i have been able to limit it down to is

Order: SACOGLOSSA
Superfamily: OXYNOOIDEA
Family: Oxynoidae
Genus: Oxynoe
Species: ???

Amphibious
09-01-2006, 02:00 AM
Beats me but, he's a cute little slugo.

Rob
09-01-2006, 02:00 AM
looks like
http://www.seaslugforum.net/factsheet.cfm?base=oxynoliv
Oxynoe olivacea

or this one
http://www.seaslugforum.net/factsheet.cfm?base=oxynviri
Oxynoe viridis

looks like both of them feed on Caulerpa

it was a cool thing to find

BrianPlankis
09-01-2006, 02:07 AM
A very interesting critter Rob! You are probably on the right track for an ID. It appears to be from the Oxynoe genus, possibly Oxynoe antillarum, Oxynoe olivacea or possibly Oxynoe viridis.

Did you add algae recently? The first two species are Atlantic or Med. in origin, so not too likely.

Oxynoe viridis factsheet on sea slug:
http://www.seaslugforum.net/factsheet.cfm?base=oxynviri

Most of this Genus appear to eat Caulerpa. Look for more :) Some people really like them for Caulerpa control in tanks that are overrun with it.

Brian

BrianPlankis
09-01-2006, 02:13 AM
I would vote to return him to your sump to graze on algae if you only have one. Besides, their babies are nearly impossible to raise, so just let him munch away and live the rest of its life :D

Isolate and Identify is pretty cool when you find a neat looking creature :D

Brian

Rob
09-01-2006, 02:25 AM
yep, it has been returned to the sump.

i only found one in there, but i did also find what looks like an egg mass too, as mentioned im sure they wont live, but hey, if they do, cool..

JR Aquatics
09-01-2006, 11:31 AM
I Found one that looked like the one in our video. It came as a hitchhiker on some floridian LR with lots of sea grass on it. I gave it to a local reefer since I didn't have a fuge at the time. He did some research and thought it was Oxynoe olivacea, his girlfriend was going to take it to work (The Shedd Aqurium) with her one day to id it, but I neverrecieved any feedback. Honestly I forgot all about it with the move and all.

Reefbaby
09-08-2006, 05:03 PM
Rob - LOVE the video! That's a great way to ID something!

Did you ever decide on which species it is? Did the eggs hatch?

Rob
09-08-2006, 05:32 PM
no indication that the eggs hatched.

and for the species, well, not exactly, closest i could get is the two i listed above

m8298
09-08-2006, 09:58 PM
Cool... A good hitchhiker.

"Diversity leads to stability."

Heard that in a podcast.

Rob
09-08-2006, 10:04 PM
Heard that in a podcast.

sounds like an awesome show..
maybe i should take a listen.. ;)

V
09-10-2006, 08:20 AM
thats about the limit u need to look anyways rob, if u cant find it on sea-slug your chances are slim anywhere else

m8298
09-10-2006, 09:58 AM
Rob, any idea when he might have been introduced?

Kinda cool when you find harmless hitchhikers. I still get all excited about even the smallest finds like baby brittle stars, sponges, I even found baby sand-sifting stars (which I think were even born in my tank, but I'm not sure.)

BrianPlankis
09-10-2006, 11:09 AM
Rob, any idea when he might have been introduced?

Kinda cool when you find harmless hitchhikers. I still get all excited about even the smallest finds like baby brittle stars, sponges, I even found baby sand-sifting stars (which I think were even born in my tank, but I'm not sure.)

Do you have any pictures of these baby sand sifting stars?

Brian

m8298
09-10-2006, 01:19 PM
I did, until my hard drive crashed...

I haven't seen any in a little while. I moved them to my fuge/sump. They looked exactly like the adults only smaller(about 10mm diameter.) I think I may have had more if I understood the concept of segregate and identify a whole lot sooner. I pulled out about a half dozen what I know believe was a larval phase of them. I thought they were some type of planeria. This was probably two years ago.

m8298
09-10-2006, 01:32 PM
What I believe were larva looked liked the binnaria stage shown here:
http://www.aims.gov.au/pages/reflib/cot-starfish/pages/cot-q27.html

Rob
09-10-2006, 01:58 PM
Rob, any idea when he might have been introduced?

Kinda cool when you find harmless hitchhikers. I still get all excited about even the smallest finds like baby brittle stars, sponges, I even found baby sand-sifting stars (which I think were even born in my tank, but I'm not sure.)
the only thing i can think of is that it came on my macro algae, and i just never noticed it. it was a very cool find.. :)

wwest
09-10-2006, 03:39 PM
Not sure if you are still looking for info rob but this is what i found..

Oxynoe viridis (http://www.seaslugforum.net/factsheet.cfm?base=oxynviri)

Rob
09-10-2006, 11:44 PM
yep, i actually have those links further up in the thread.. thanks.. :)

wwest
09-10-2006, 11:56 PM
i posted the wrong link lol. And now i cant find the one i ment to post lol.. its been a long day lol.. ill try and find it and get it to ya..

Reefbaby
09-11-2006, 07:37 AM
What I believe were larva looked liked the binnaria stage shown here:
http://www.aims.gov.au/pages/reflib/cot-starfish/pages/cot-q27.html

YIKES!!!! Hopefully it wasn't these that you pulled out....or rather, THANK GOD you did pull them out. You wouldn't want any Crown of Thorns roaming around in your tanks. You could kiss all your corals goodbye...

Rob
09-11-2006, 11:54 AM
lmao.. the Crown of Thorn stars are so big, they would likely take up our whole tanks.. ;)
and quickly starve to death also, they eat ALOT.. ;)

m8298
09-11-2006, 07:56 PM
Nah... No Crown of Thorns. I have seen two or three baby Sand Sifters though. One I know went with a Nano cube that I traded. Then two different times, I found one in the 90 gallon. That's when I read a little about their reproductive cycle. This was a while after I pulled out what I now believe was larvae. I couldn't figure out what they were at the time.

How do you begin to identify something, if you don't even know the Class, Order, or Genus? Keep in mind that this pre-dated Talkingreef, at least for me. It would be nice if you could search by photo somehow.