Nudibranch Identification Help

[seymour47]

A number of these little guys showed up yesterday in a colleagues tank. I assume it's a nudibranch, but I can't identify what species. Any help?

 

[seymour47]

Didn't attach correctly the first time. Here it is.

 

[pagojoe]

I don't think it's a nudibranch. It might be a velutinid.

https://www.google.com/search?safe=...a=X&ei=fs7FU8HtBIaoyATp64KIBg&ved=0CBwQvgUoAQ

I doubt it's harmful.



Don

 

[friartuuk]

I also need help identifying a nudibranch. I found one of these on the glass then another showed up the next day. I'm about to start adding corals and want to see if these are reef safe. My tank has been set up for a few months, running with only live rock and a peppermint shrimp and an electric blue hermit crab. There's no coral yet, so I doubt they depend on coral. I'd rather not kill them if they're harmless. I know the pic isn't great. They're only about 1/2" long. One is on the right side of the shell, the other is directly below it.

 

[Betta132]

I see two little bits of stuff. They don't really look like anything at all. Can you scoop them out and get a better pic? Photograph them in water so they'll be all spread out.

 

[pagojoe]

The one below the shell is an Elysia species. It's a harmless algae eater. I can't tell much about the other, but if I had to guess, I'd say it's also either an Elysia or Thuridilla species. I don't think either of them are harmful.

Cheers,



Don