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Nannostomus species?
October 23, 2012
11:37 am
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Matt
Málaga, Spain
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Has anyone seen this one before? N. grandis perhaps?

Nannostomus-cf-beckfordi.jpgImage Enlarger

Cake or death?
October 23, 2012
6:18 pm
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Graham Ramsay
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From : http://www.vertebrate-zoology......ke_283.pdf

Ventral fins colourless in N. grandis spec. nov. vs. with milky white tips in N. beckfordi

I think these are nicely coloured N. beckfordi

October 23, 2012
7:11 pm
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martin.piranha
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N. beckfordi is correct.

Martin

October 24, 2012
10:19 am
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Matt
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Ok thanks guys - added pic to the profile.

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October 26, 2012
4:56 pm
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Matt
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Is this Nannostomus marilynae?

Nannostomus-digrammus-HW.jpgImage Enlarger

Nannostomus-digrammus-2-HW.jpgImage Enlarger

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October 26, 2012
7:13 pm
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Graham Ramsay
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Matt said
Is this Nannostomus marilynae?

N. marilynae should have a tertiary horizontal stripe which these fish appear to lack. I think these are N. digrammus.

http://www.sil.si.edu/smithson.....z-0186.pdf

October 26, 2012
7:33 pm
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Matt
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That's what the pics were labelled as so perfect. Thanks Graham.

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October 29, 2012
8:45 am
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Matt
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This one looks like Nannostomus anduzei with guanine deposits in the skin?

Nannostomus.jpgImage Enlarger

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October 29, 2012
12:58 pm
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martin.piranha
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Matt said
This one looks like Nannostomus anduzei with guanine deposits in the skin?

 

2xno. But maybe N. digrammus.

 

Martin

October 29, 2012
6:55 pm
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Graham Ramsay
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N. anduzei lacks an adipose fin which (I think) this individual has. There is a white specimen at this link:

 

http://www.aqualifestyle-franc.....uzei-blanc

October 30, 2012
8:25 am
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Matt
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Ok thanks again chaps, should I add it to the N. digrammus profile then?

Something interesting about N. rubrocaudatus. ‘Saramirisa at the banks of the Marañón (upper Amazon river) between the rivers Morona and Santiago’, the locality given by Glaser's as collection point for this species, is hundreds of kilometers from Iquitos and around 2500 m AMSL in the lower Andes.

I'm not convinced a Nannostomus sp. would be found at this kind of altitude. Does anyone know more?

Also, what kind of nocturnal patterning do N. marginatus, N. mortenthaleri, and N. rubrocaudatus display?

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November 1, 2012
12:09 am
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Graham Ramsay
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Matt said

Also, what kind of nocturnal patterning do N. marginatus, N. mortenthaleri, and N. rubrocaudatus display?

 

Not much difference to normal - just a little faded.

November 1, 2012
8:54 am
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Matt
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That's great, cheers Graham.

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January 7, 2013
8:43 am
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Matt
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Matt said 
Something interesting about N. rubrocaudatus. ‘Saramirisa at the banks of the Marañón (upper Amazon river) between the rivers Morona and Santiago’, the locality given by Glaser's as collection point for this species, is hundreds of kilometers from Iquitos and around 2500 m AMSL in the lower Andes.

I'm not convinced a Nannostomus sp. would be found at this kind of altitude. Does anyone know more?

Got this totally messed up and have been gratefully corrected. The source used for the info about Saramiriza was written in a confusing way and the settlement is actually in a lowland plain east of the Andes mountains, but can be reached by a pass that crosses them at approx. 2500 AMSL.

Cake or death?
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