View Full Version : Black slug-reef friend or foe

11-10-2008, 05:51 AM
I noticed a black slug around 1/2 inch long crawling around tonight, it must have hitchiked on the chunk of live rock my kenya tree came on. Its black and looks kinda hairy, is this a good hitchiker, or a bad one? Thanks for any help.

11-10-2008, 06:29 AM
do you have a pic? im however 60% sure its safe if its the one im thinking of

11-10-2008, 12:07 PM
Here's the best I could get last night. The lights were out, and since I had no fish to startle I could use the flash. http://i51.photobucket.com/albums/f370/jabsgirlforever/P1010001-18-1.jpg

Its hard to make it out exactly, but the pic shows how I saw it too.

11-10-2008, 12:28 PM
Does it have sort of a thumbnail sized shell on it's back that only covers part of it. If so it's a stomatella, those are reef safe and very awesome. http://www.melevsreef.com/id/black_stomatella.html

11-10-2008, 01:02 PM
Looks to be a nudibranch of some sort. Hard to tell which from the picture though.

11-10-2008, 02:33 PM
If it looks kind of hairy there is the possibility that it is a Sea Hare. Sea Hares are 100% safe but they have one major drawback; they only eat hair algae. Once they run out of hair algae they will starve to death.

11-10-2008, 03:21 PM
It did look like it was hairy, but it was hard to tell, but it didn't look like it had a shell. I'll have to get a better look when I see it again I'm gonna be building a sump and have decided to section it to make a refugium, can I grow hair algae in the refugium and place the hair in there so it will survive? At the rate my mexican turbo snail is going, I won't have any hair algae left in a few weeks.

11-10-2008, 10:48 PM
Hard to say what it is, but it looks a lot like the black Stomatella in the link Halelorf provided (maybe the one you have has a shell the same color as its body). Of course it could be anything.

If it's a nudibranch, it might not be the type which consumes algae.

The sea hare's I've seen have been lighter in color (and huge...human heart sized)...but all big things start small.

11-14-2008, 04:56 PM
I finally got an up close look at it and it does look like a stomatella, the shell is the exact same color as its body

11-15-2008, 06:02 AM
does it look like this guy?