Nannostomus rubrocaudatus new species

**hwchoy** · 21st May 2009, 22:32

in German, but it has colour photos of the new species Nannostomus rubrocaudatus and the other red coloured pencilfishes.

Nannostomus rubrocaudatus spec. nov. ñ ein neuer Ziersalmler aus Peru

**baranne** · 22nd May 2009, 00:35

they look stunning! pencilfish, one of my favourite fishes. Though they can be quite aggressive

**hwchoy** · 22nd May 2009, 01:09

the pix are really good reference.

**hwchoy** · 22nd May 2009, 01:25

here's the abstract…

Nannostomus rubrocaudatus sp. n. is described from Peru. The new species is closely related with N. mortenthaleri and N. marginatus. The coloration of the males of N. rubrocaudatus sp. n. in life is extremely different from these species. The new species has a clearly developed sexual dichomatism, which is not to be seen in N. marginatus. The sexual dimorphism in the anal-fin described by WEITZMAN & WEITZMAN (2003) for N. mortenthaleri was also found in N. rubrocaudatus sp. n. and in a “colour variety” of N. marginatus from the río Negro basin.

**leeruisheng** · 22nd May 2009, 01:43

mm looks similiar to what lfs are selling as corel red sp. purple.

**hwchoy** · 22nd May 2009, 01:58

pix extracted from the paper, copyright as stated. can anyone provide a good translation?

N. rubrocaudatus

N. mortenthaleri

N. marginatus

**Zenislev** · 22nd May 2009, 22:22

WOW! Nice pictures! But isnt this N. rubrocaudatus similar to purple pencils?

**hwchoy** · 22nd May 2009, 22:50

I am not familiar with the red pencils, you are probably right.

**tetroid** · 24th May 2009, 10:12

Originally Posted by Zenislev

WOW! Nice pictures! But isnt this N. rubrocaudatus similar to purple pencils?

Yeah, I think those are sold as purple pencilfish. I heard they were a colour morph of n. marginatus, but I guess they're a separate species. There's some pictures at jjphoto.dk