Please ID

pwnell · Post by **pwnell** » Tue Jan 15, 2013 10:23 am

They live in salt water (reef aquarium). Taken with a 40x objective. Are they Paramecium?

arturoag75 · Post by **arturoag75** » Tue Jan 15, 2013 10:27 am

Waldo,
i don't know genera but this is a stunning shot

best
arturo

naturephoto1 · Post by **naturephoto1** » Tue Jan 15, 2013 10:31 am

Waldo,

Not only a stunning image but brightly colored. Sorry I can't help with the ID.

Rich

Franz Neidl · Post by **Franz Neidl** » Tue Jan 15, 2013 11:00 am

Hello Waldo,

certainly not a Paramecium, maybe a Pseudokeronopsis sp.

Franz

pwnell · Post by **pwnell** » Tue Jan 15, 2013 11:04 am

Thanks. Except for colouring it looks similar to this.

fpelectronica · Post by **fpelectronica** » Tue Jan 15, 2013 11:12 am

Hello
Possibly pseudokeronopsis rubra
http://youtu.be/SK-NUOdG-no
Francisco

Jacek · Post by **Jacek** » Wed Jan 16, 2013 5:13 am

beautiful photo

curt0909 · Post by **curt0909** » Wed Jan 16, 2013 5:26 am

Wow those guys are bright red. Super!

harisA · Post by **harisA** » Wed Jan 16, 2013 7:52 am

very nice.

Bruce Taylor · Post by **Bruce Taylor** » Wed Jan 16, 2013 8:58 am

Wonderfully clear images!

The pattern of ventral ciliation is clearly visible, and there is no doubt that these are Pseudokeronopsis. There are several reddish species: rubra, carnea and pararubra (possibly a synonym of carnea). If you want to identify these to species level, see Weibo Song et al., 2006 "Comparison and Redefinition of Four Marine, Coloured Pseudokeronopsis."

I'm not sure if this link will work without a VPN connection: http://www.aseanbiodiversity.info/Abstract/51007785.pdf

Another good resource (harder to find, unfortunately) is Berger's Monograph of the Urostyloidea, 2005.

pwnell · Post by **pwnell** » Wed Jan 16, 2013 9:53 am

Yes, I can access that link, thanks for the identification.