PlanetCatfish.com

anyone familiar with the Argentinian species Parapimelodus valenciennis?

is it a subtropical fish (unheated tank) nor no,
is it fragile or sturdy, shoaler, specialist or oppertunist, etc etc

it's repeatedly turning up in Germany and this might be a very interesing fish.

fishbase shows this pic wich reminds me of a species that used to have its own family and might be merged into Pimelodidae


can anyone shed some light on this enigmatic fish?

Don't know about the fish, but the north of Argentina has in winter an average of 13 C - and the south is even colder. Therefore consider it a sub-tropical species if it's known only from Argentina

the location is Paraná River basin

any idea if this is really cold or subtropical?

reminds me of Schilbeidae but these are African. don't know if all are.

do not know, cannot find the species Parapimelodus valenciennis you are citing, Alex, the closest I found is this Cat-eLog > Pimelodidae > Pimelodus > Pimelodus albicans (Pimelodus albicans (Valenciennes in Cuvier & Valenciennes, 1840)) ..... and I do not think this guy looks close to your pic.

sidguppy wrote:the location is Paraná River basin

any idea if this is really cold or subtropical?

The Parana river begins in tropical regions and flows south. It ends in the Rio de la Plata, where it meets the Rio Uruguay. This later river has a similar pattern, but leys more to the east

Said R de la Plata is at 35 degrees south - that is, in summer max average 22 C in winter min average 10 C

Due to the fact that bodies of weater - seas, that is - keep summers relatively cool and winters relatively warm, the Rio Parana (and Rio Uruguay) tend to be nearly the same temperature in winter for at least the last 800 km / 500 miles: further north the sun has more power (hotter) but the sea is further away (cooler)

Obviously, in summer these 2 factors both result in warmer water.

However, back to the Parana river - it is mostly sub-tropical

Victor, it's in fishbase

Parapimelodus valenciennis

and also for quite some time on the stocklist of a German LFS that has a good reputation of stocking and shipping rare catfish.

Idon't know if it's on Cloffsca

Viktor Jarikov wrote:reminds me of Schilbeidae but these are African. don't know if all are.

do not know, cannot find the species Parapimelodus valenciennis you are citing, Alex, the closest I found is this Cat-eLog > Pimelodidae > Pimelodus > Pimelodus albicans (Pimelodus albicans (Valenciennes in Cuvier & Valenciennes, 1840)) ..... and I do not think this guy looks close to your pic.

Then you didn't looked very well:



not the same but a lot closer.

sidguppy wrote:and also for quite some time on the stocklist of a German LFS that has a good reputation of stocking and shipping rare catfish.

If you mean the stocklist of Tanganyika.de then these are gone.

they were still on that one yesterday evening......

did they upgrade?

Last friday he had 5 of them. Now I have 5 of them.


They do not hide a lot, they are almost always in the current and they seem to like each others company. They act totally different then Pimelodus.

you sure are working on an impressive collection!
mind doing a species list one of these days?
including all fish, not just catfishes.

still there's one thing of you that annoys the heck out of me;
I have to literally DRAG information out of you with a team of wild horses and even then it comes out by the breadcrumb.

tell us about that visit; you actually have been to the shop of Tanganyika.de.......what's it like?

Last friday he had 5 of them. Now I have 5 of them.


They do not hide a lot, they are almost always in the current and they seem to like each others company. They act totally different then Pimelodus.

If you would feel so inclined, some pics for the Cat-eLog would be great as well once you have them settled in.

Birger

Thanx, Bijn!

So are they Parapimelodus nigribarbis or Parapimelodus valenciennis? If these are one and the same, then Cat-eLog can be refined, maybe... well, what do I know anyway?

sidguppy wrote: mind doing a species list one of these days?
including all fish, not just catfishes.

no problem

sidguppy wrote:still there's one thing of you that annoys the heck out of me;
I have to literally DRAG information out of you with a team of wild horses and even then it comes out by the breadcrumb.

sorry, I wasn't a lot at home the last weeks.

sidguppy wrote:tell us about that visit; you actually have been to the shop of Tanganyika.de.......what's it like?

It's little but impressive. Later I'll tell you more. Is there a shop-review-section on this forum?

Birger wrote: If you would feel so inclined, some pics for the Cat-eLog would be great as well once you have them settled in.

Birger

no problem, when I succeed to take some decent pics you surely can use them.

Viktor Jarikov wrote:So are they Parapimelodus nigribarbis or Parapimelodus valenciennis? If these are one and the same, then Cat-eLog can be refined, maybe... well, what do I know anyway?

no no, I didn't meant they are the same, just wanted to say that there is a closer species in the cat-e-log. I bought mine as Parapimelodus valenciennis, I have now idea how I can distinguish them from the other Parapimelodus. Nigribarbis = Black barbels?

Bijn, I'd be careful where you put them in

fish like this can be kept at 24-25'C but only for a few months.

if you keep them continuously at temperatures like that, they won't last long.
they should be in an unheated tank the rest of the time, and likely they must be kept fairly cold (12-18'C) for at least a few months.

sidguppy wrote:Bijn, I'd be careful where you put them in

fish like this can be kept at 24-25'C but only for a few months.

if you keep them continuously at temperatures like that, they won't last long.
they should be in an unheated tank the rest of the time, and likely they must be kept fairly cold (12-18'C) for at least a few months.

When I bought them I knew they where from Argentina so I thought I shouldn't keep them too hot but I didn't think I should keep them that cool. Temp in my thank should be 22°C for a few months.

Maybe an unheated tank is possible without too much shuffling.

Keeping them on 24 C all year will most likely burn them up - agen 2 or 3 year a year

As I wrote above, depending from where in the Parana they come from, winter should be at least 15 C for a few months or colder

I did some research and I have to admit that I might have made some mistakes here, based on me lacking a firm grip on southern Latin America's topography.

by assuming this was a catfish from the Parana, I immediately assumed it would be a fairly southern species, but I messed up the maps.

apperantly it can be Argentinian, from the Parana-basin and still fairly tropical if it's from the part of the Parana basin next to Paraguay.

this would mean it would do just fine at room temperature and in summer at tropical temperatures, but it won't need a cold period below 18'C.

awesome!

this is prime and unique catelog material, this....

a real beauty btw

Bijn, when you have the pictures you want to use for the Cat-eLog (such as the one above) send them to me at [email protected] and I will put them in.

Are you guys (Bijn and Sid) reasonably sure the ID is correct...I am assuming so.

Birger

sidguppy wrote:this is prime and unique catelog material, this....

absolutely not






he's looking at the wrong side

Birger wrote:Are you guys (Bijn and Sid) reasonably sure the ID is correct...I am assuming so.

not really, thats how they were labelled

absolutely not
he's looking at the wrong side

and you, with all your photographic experience do not know how to reverse a picture with the most simple photo software??
I'm stumped

Are you guys (Bijn and Sid) reasonably sure the ID is correct...I am assuming so.

not a 100%, no

it sure looks a lot like the picture in Fishbase
we assume that one IS correct, cause we have to start somewhere.

the ones I have are caught in Argentine (I hope to receive a more specific location), so normally they are not Parapimelodus nigribarbus.

Countries where Parapimelodus valenciennis is found:
http://www.fishbase.org/Country/Country ... lenciennis

Countries where Parapimelodus nigribarbis is found:
http://www.fishbase.org/Country/Country ... igribarbis

Great pics Bijn!