Coral ID please!

[Nixon]

Hey guys and gals. I've got my little 10G nano running and it's been going for a few months now. Everything seems to be going great except I'm seeing little black dots on my two clowns. I looked it up and it just looks like "skin irritation" from rubbing up against some coral. The only coral I see them hanging around are these ones and I have no idea what they are. Anybody know what they are and if they're harmful to my clowns? Thanks for your help!





They seem to like this one the most:

[marie]

That looks more like some kind of macroalgae to me and a very nice one too

[Chowder]

I'd second that.

[Nixon]

does this pose any threat to my clowns? the dots don't seem to be going away...will they get used to it or should i get rid of the coral?

[Snappy]

Doesn't look like coral to me either, I also agree with macro algae.

[04scoobysti]

The one on the top in the pictures, the one your clowns like, is Nemastoma a red Algae. I've had some of it before and have seen it at my LFS may times on their Live rock. I dont think either are anything to worry about or the cause of spots on your fish.

[Delphinus]

Black dots could be "black ich" (not really "ich" but a tiny flatworm). If you can give the fish a FW bath (match for temperature) for say 5 minutes and if it's black ich the flatworms will fall off.