Rio Nanay Tetras ?

[Stephen]

I have a list of some tetras from the Rio Nanay in Peru. (see list below)
Does anyone have any additional confirmed tetra species from the Rio Nanay in Peru.
I will also need a link to the confirmed species, so no guessing.

Here is my existing list:-
Two Spot Astyanax (Astyanax bimaculatus)
Kennedy's Tetra (Astyanax kennedyi)
Head & Tail Light Tetra (Hemigrammus ocellifer)
Pretty/Garnet Tetra (Hemigrammus pulcher)
Ember Tetra (Hyphessobrycon amandae), I have these already
Bleeding Heart Tetra (Hyphessobrycon erythrostigma)
Loreto Tetra (Hyphessobrycon loretoensis) ***
Red-Blue Peru Tetra (Hyphessobrycon margitae) ***
Peruvian Tetra (Hyphessobrycon peruvianus)
Blue Tetra (Knodus borki)
False Rummy-nose Tetra (Petitella georgiae) ***
Hummingbird Tetra (rochilocharax ornatus)

I am also looking to source the species marked ***, I prefer actual LFS with a physical shop as opposed to just a Mailing address, so ignore aquasnack.co.uk, Aquafood, trigonectes (ebay) which are all the same.

Thanks for looking.
Stephen

[plankton]

Not exactly a tetra, but...it is a characin
https://www.seriouslyfish.com/species/n ... enthaleri/

[Lo1]

I have a list of some tetras from the Rio Nanay in Peru. (see list below)
Does anyone have any additional confirmed tetra species from the Rio Nanay in Peru.
I will also need a link to the confirmed species, so no guessing.

Here is my existing list:-
Two Spot Astyanax (Astyanax bimaculatus)
Kennedy's Tetra (Astyanax kennedyi)
Head & Tail Light Tetra (Hemigrammus ocellifer)
Pretty/Garnet Tetra (Hemigrammus pulcher)
Ember Tetra (Hyphessobrycon amandae), I have these already
Bleeding Heart Tetra (Hyphessobrycon erythrostigma)
Loreto Tetra (Hyphessobrycon loretoensis) ***
Red-Blue Peru Tetra (Hyphessobrycon margitae) ***
Peruvian Tetra (Hyphessobrycon peruvianus)
Blue Tetra (Knodus borki)
False Rummy-nose Tetra (Petitella georgiae) ***
Hummingbird Tetra (rochilocharax ornatus)

I am also looking to source the species marked ***, I prefer actual LFS with a physical shop as opposed to just a Mailing address, so ignore aquasnack.co.uk, Aquafood, trigonectes (ebay) which are all the same.

Thanks for looking.
Stephen

Does this one meet your criterion:

Peru Sailfin Tetra (Crenuchus spilurus)

[Stephen]

@plankton

Not exactly a tetra, but...it is a characin
https://www.seriouslyfish.com/species/n ... enthaleri/

Thanks Ian, I already have this beautiful fish listed under Lebiasinidae (pencil fish) as opposed to being listed under Characidae/characins (tetra).
Have you seen the price of the Coral Red Pencilfish ? Over £20.00 each
I have seen them at LFS but the price is not tempting me.

[Stephen]

Does this one meet your criterion:

Peru Sailfin Tetra (Crenuchus spilurus)

It doesn't without actual documentation.
My quick search says from Orinoco and Amazon River basins; and coastal rivers in the Guianas (Guyana, French Guiana and Suriname).
My themed aquarium is about fish that exist in my chosen river theme (Rio Nanay in Peru), they may exist elsewhere also but must exist in my chosen river theme.
Thanks for looking though

[Lo1]

Peru Sailfin Tetra (Crenuchus spilurus)

Origin: Wild Peru
Locale: Rio Nanay
Diet: Omnivore and micropredator. Will readily accept most frozen and prepared foods in the aquarium
Adult Size: 2″
Recommended Tank Size: 15 Gallons
Compatibility: Peaceful toward similar sized or larger tankmates. May eat very small fish or invertebrates.

Preferred Water Parameters
pH: 6.5 – 7.2
Temp: 76-82F
Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: <30ppm


Sailfin Tetra (Crenuchus spilurus)
The Sailfin Tetra (Crenuchus spilurus) is found in both the Amazon and Orinoco River Basins.

https://www.sciencesource.com/archive/I ... 47297.html

[Stephen]

Peru Sailfin Tetra (Crenuchus spilurus)

Origin: Wild Peru
Locale: Rio Nanay
Diet: Omnivore and micropredator. Will readily accept most frozen and prepared foods in the aquarium
Adult Size: 2″
Recommended Tank Size: 15 Gallons
Compatibility: Peaceful toward similar sized or larger tankmates. May eat very small fish or invertebrates.

Preferred Water Parameters
pH: 6.5 – 7.2
Temp: 76-82F
Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: <30ppm


Sailfin Tetra (Crenuchus spilurus)
The Sailfin Tetra (Crenuchus spilurus) is found in both the Amazon and Orinoco River Basins.

https://www.sciencesource.com/archive/I ... 47297.html

Thanks again
The website states "This individual was photographed in Iquitos, Peru"
Iquitos, Peru is a Peruvian city where the Amazon meets the Rio Nanay, Rio Itaya, Rio Momón and there are also some lakes nearby too.

The Crenuchus spilurus comes under Crenuchidae (South American darters) as opposed to being listed under Characidae/characins.
The only confirmed fish species that I already have under "Crenuchidae" is Elachocharax pulcher but I also have a question mark for Geryichthys sterbai.
If you can confirm this species was actually caught in the Rio Nanay (documentation) then I would gladly add it to my species list.
It is very unlikely that the Crenuchus spilurus is available in UK LFS and to be honest it is best kept as an individual in an aquarium.

Peaceful with other species but does not always make an ideal community fish due to its rather timid nature and predominantly benthic existence.
Ideally it should be maintained alone or with comparably-sized, non-aggressive characids and relatives plus smaller callichthyid or loricariid catfishes.
Nuptial adult males are territorial to an extent but physical damage is rare provided the décor is arranged in such a way that plenty of broken lines-of-sight are provided.

If anyone could confirm that other tetra species that are available at UK LFS exist in the Rio Nanay then those species may be of interest.
It took me a while to find that Head & Tail Light Tetra (Hemigrammus ocellifer) exist in the Rio Nanay.
I have also seen some reports (not confirmed) that even the Neon Tetra (Paracheirodon innesi) and the False Penguin Tetra (Thayeria boehlkei) exist in the Rio Nanay.
Now, if someone had a document stating that the Black Widow Tetra (Gymnocorymbus ternetzi) exists in the Rio Nanay then I would be very pleased as it's my favourite tetra species, but unlikely.
I am trying to expand my south American river datasheets to give myself more options, this being my Rio Nanay datasheet which already has over 200 fish species listed.
My 3 main fish species interests are Tetra, Corydoras and Cichlids but also Pleco are of recent interest.
The only Pleco that may be of interest is the Iquitos Tiger Pleco L226 (Panaqolus changae) if I can source one.

Thanks

[martin rick]

Apparently the Nanay river contains several species not native to it. During the rainy season, lakes are formed that are fed from one river and continuing rain may let it drain into the Nanay. Discus were mentioned as one of the non-indigenous species. That is according to a Spanish speaking local on you tube. https://www.youtube.com/watch?v=a4LcFleFmFsu
Scrolling down about half way on http://www.scielo.org.pe/scielo.php?scr ... 0000100004 there's a list of all the species that were found in a recent university survey including about 30 Charicidae.

[Stephen]

Apparently the Nanay river contains several species not native to it. During the rainy season, lakes are formed that are fed from one river and continuing rain may let it drain into the Nanay. Discus were mentioned as one of the non-indigenous species. That is according to a Spanish speaking local on you tube. https://www.youtube.com/watch?v=a4LcFleFmFsu
Scrolling down about half way on http://www.scielo.org.pe/scielo.php?scr ... 0000100004 there's a list of all the species that were found in a recent university survey including about 30 Charicidae.

Apparently a plane crashed in to the Rio Nanay years ago that was carrying a shipment of live discus and therefore discus were accidentally introduced and thrived.

The document looks interesting, I'll read it later. Thanks for that, appreciated.

[martin rick]

Apparently the Nanay river contains several species not native to it. During the rainy season, lakes are formed that are fed from one river and continuing rain may let it drain into the Nanay. Discus were mentioned as one of the non-indigenous species. That is according to a Spanish speaking local on you tube. https://www.youtube.com/watch?v=a4LcFleFmFsu
Scrolling down about half way on http://www.scielo.org.pe/scielo.php?scr ... 0000100004 there's a list of all the species that were found in a recent university survey including about 30 Charicidae.

Apparently a plane crashed in to the Rio Nanay years ago that was carrying a shipment of live discus and therefore discus were accidentally introduced and thrived.

The document looks interesting, I'll read it later. Thanks for that, appreciated.

I think the English translation for the abstract is misleading. The "vaciente" (emptying) season should correspond to the dry season and the "cresciente" (growing) would be better translated as the wet season.
PS the paper was originally published in 2010 so it's not that up to date.