Rio Negro

racoll · Post by **racoll** » 04 Mar 2013, 02:07

Recent collecting trip to the upper Rio Negro near São Gabriel da Cachoeira, Brazil. Again, we weren't targeting catfishes, but a few turned up along the way.

Beach at São Gabriel da Cachoeira.

Rapids at São Gabriel da Cachoeira.

Forest.

or ?

Very interesting doradid. Almost looks like a Chimeara. Any ideas?

?

or ?

?

This was a nice find. Caught with bare hands, snorkelling. Very long black barbels and really striking colour. Syntopic with Pterophyllum, and .

? Very nice!

. Bumped into a fisherman wandering up the road with his catch at the end of the day, so we stopped to have a look. Nearly had a seizure when I saw this. Was still alive too!

?

or baby aspredinid?

Lovely . Any ideas?

.

. Massive.

. Not sure which one.

Some non-catfishes:

There's something really nice about collecting aquarium favourites in the wild. I think I remember @Jools saying the same thing about wild zebra danios?

Now, here's a few we bought from traders in Barcelos. I think some of them came from the Rio Demini.

.

. Big one!

.

from the Demini. Can't remember the L number.

.

And to finish, a rather nice .

MatsP · Post by **MatsP** » 04 Mar 2013, 02:26

Very nice. A. pauciradiatus is a "long way from home". Nice Pim, whichever it is.

--
Mats

racoll · Post by **racoll** » 04 Mar 2013, 02:32

MatsP wrote: A. pauciradiatus is a "long way from home".

I noticed that too. Perhaps the cory people can suggest a better match?

MatsP · Post by **MatsP** » 04 Mar 2013, 02:44

racoll wrote:I noticed that too. Perhaps the cory people can suggest a better match?

Interestingly, according to our distribution data, there are no Aspidoras in Rio Negro.

Like for the Sturisoma, I'm not saying it's wrong, just a little surprised about the apparent wide distribution.

--
Mats

Post by **Silurus** » 04 Mar 2013, 03:12

racoll wrote:
Scoloplax
or baby aspredinid?

The former. And based on locality, most likely .

Post by **Silurus** » 04 Mar 2013, 05:27

racoll wrote: Very interesting doradid. Almost looks like a Chimeara. Any ideas?

I think this is .

Post by **Silurus** » 04 Mar 2013, 05:40

racoll wrote:
Auchenipterus
?

I'm inclined to think that this is some kind of . If so, it's almost certainly unnamed.

Post by **Silurus** » 04 Mar 2013, 05:43

racoll wrote:
Candiru
. Not sure which one.

I think this is .

YouTube · Post by **Jools** » 04 Mar 2013, 08:55

Silurus wrote:
racoll wrote:
Auchenipterus
?

I'm inclined to think that this is some kind of
Trachelyichthys
. If so, it's almost certainly unnamed.

I agree on both counts, was my gut thought before I read HH's view. sp. "Rio Negro"?

Jools

racoll · Post by **racoll** » 04 Mar 2013, 20:22

Silurus wrote: I'm inclined to think that this is some kind of Trachelyichthys. If so, it's almost certainly unnamed.

Bugger. Only collected three, I think. They appeared to quite abundant at first, but suddenly all disappeared when the full moon rose (although it may have been more to do with me splashing my net about all over the place and shining lights).

Silurus wrote: I think this is Tridensimilis.

It came out of the gills of a , apparently.

Silurus wrote:I think this is Doras phlyzakion.

I checked the description, and I don't think it's that one. looks like a better match, I think.

krzys · Post by **krzys** » 12 Mar 2013, 17:23

https://lh6.googleusercontent.com/-4Yhz ... C04391.JPG
He has teeth like Scobinancistrus.

racoll · Post by **racoll** » 12 Mar 2013, 18:02

krzys wrote:https://lh6.googleusercontent.com/-4Yhz ... C04391.JPG
He has teeth like Scobinancistrus.

Actually, not if you look closely. have spatulate (spoon shaped) teeth, which is why scientists consider them to be closely related to . have strongly bicuspid (fork shaped) teeth.

Check out Dr Armbruster's loricariid homepage for more information.

Psy · Post by **Psy** » 08 Apr 2013, 03:51

Is that a ?

Any info on what it looked like where you found it? Aside from the one picture in the clog there isn't much on the specific areas where they are found.

PseudaSmart · Post by **PseudaSmart** » 08 Apr 2013, 13:17

So you get paid to do this

Nice!
Jim

Viktor Jarikov · Post by **Viktor Jarikov** » 08 Apr 2013, 13:56

racoll wrote:
Pimelodus blochii
or
Pimelodus albofasciatus
?

?

Superb account, Rupert!

call911 · Post by **call911** » 04 Jul 2013, 12:33

Nice pictures. Thanks for sharing

racoll · Post by **racoll** » 04 Jul 2013, 18:06

Just realised I never replied to this.

Psy wrote:Is that a Platydoras armatulus?

Yes, it is , although it's possible there's some variation in that species. It has a very wide distribution. Most in the trade come from Peru I think.

Psy wrote:Any info on what it looked like where you found it? Aside from the one picture in the clog there isn't much on the specific areas where they are found.

I don't have photos I'm afraid, but was caught at the edge of a lake, by a grassy area where fishermen keep their boats. It was among tree roots in shallow water (<1m), along with Pterophyllum (angelfish), and . Water was very black, and warm.

HaakonH · Post by **HaakonH** » 24 Jul 2013, 09:30

Lovely . Any ideas?

I'd say this is the quite variable

Haakon

See5163 · Post by **See5163** » 11 Dec 2013, 07:14

Thanks for sharing own experience.

joemc · Post by **joemc** » 11 Dec 2013, 07:53

fantastic photos and you have answered one of my questions with them! I wondered where that form (maybe species?) of Crenuchus spilurus was found, if was offered for sale here last year, but no catch location

racoll · Post by **racoll** » 11 Dec 2013, 15:24

joemc wrote:I wondered where that form (maybe species?) of Crenuchus spilurus was found, if was offered for sale here last year, but no catch location

If I recall correctly we got the Crenuchus from near Santa Isabel do Rio Negro. The ones from the trade were labelled as coming from Venezuela. See http://www.aquariumglaser.com/en/archiv.php?news_id=679. The upper Rio Negro and Orinoco are joined, so many species are shared between the two. There's only one described species of Crenuchus (C. spilurus), but due to the wide distribution and variation, I'd imagine it's a complex of species.

joemc · Post by **joemc** » 11 Dec 2013, 23:58

thanks for the link and the info, the ones in the link look pretty skinny, they are one of my favourite tetras, a very cool tetra that thinks it is an apistogramma!

Karsten S. · Post by **Karsten S.** » 18 Jan 2014, 21:36

Hi,

racoll wrote:
MatsP wrote: A. pauciradiatus is a "long way from home".
I noticed that too. Perhaps the cory people can suggest a better match?

the imported specimen of "Aspidoras" pauciradiatus all originate from Rio Negro region as far as I know.
It is not clear if the type locality is correct, it seems that no "Aspidoras" pauciradiatus can be found there.

The cory that you caught is what we aquaristists consider to be "Aspidoras" pauciradiatus although it is more than doubtful that it is really an Aspidoras species.

Cheers,

racoll · Post by **racoll** » 18 Jan 2014, 21:55

Thanks for the info. Just what I was looking for!

Sjors · Post by **Sjors** » 21 May 2016, 13:58

Great information! Nice to see those species. Some of them are not listed at fishbase and mongabay. Nice to see the Tetragonopterus argenteus and Aequidens Diadema / Pallidus.

TheFishGuy1 · Post by **TheFishGuy1** » 11 Oct 2018, 16:50

These are nice finds and photos. Thank you for sharing them!

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