Id on pleco from Rio Huallaga

Haavard Stoere · Post by **Haavard Stoere** » 18 Nov 2009, 22:42

We cought these a few hours upstream from Huanjui.

These are two of the three I brought home. Sorry for the sterile environment.

DutchFry · Post by **DutchFry** » 19 Nov 2009, 10:23

Nice species!

It looks like a Hypostomus of some kind, only the catelog does not give any Hypostomus for Rio Huallaga. Of course this doesn't have to mean there are no Hypostomus species in this river.

How about dentition? got a mouth shot?

Haavard Stoere · Post by **Haavard Stoere** » 19 Nov 2009, 13:09

DutchFry wrote: How about dentition? got a mouth shot?

I can make a shot of the dentition when I find the time.

Martin S · Post by **Martin S** » 19 Nov 2009, 13:28

I thought maybe , maybe , but none of them are found in Rio Huallaga. The colouring is also off, though the caudal fin seems to have a similar shape, though am sure there are Hypostomus with similar.
Martin

Haavard Stoere · Post by **Haavard Stoere** » 19 Nov 2009, 19:12

I had a look at the teeth against the glass, and it is definetely a Cochliodon/Hypostomus.

DutchFry · Post by **DutchFry** » 19 Nov 2009, 19:22

some of the pics of do seem close.

catelog distribution says: "Throughout northern South America and Trinidad. Also found throughout the Orinoco basin, although some authors believe that Orinoco specimens may represent a different species. The photographs above are all of H. plecostomus from the Orinoco basin."

but maybe we should call these Hypostomus sp. 'Rio Huallaga' for now?

Haavard Stoere · Post by **Haavard Stoere** » 19 Nov 2009, 20:03

DutchFry wrote:some of the pics of
Hypostomus plecostomus

but maybe we should call these Hypostomus sp. 'Rio Huallaga' for now?

Maybe we will have to call it Hypostomus sp. 'Rio Huallaga'. I will ask Hans Georg Evers what he thinks. He has been on a catfish expedition in the same river a few years ago.

Haavard Stoere · Post by **Haavard Stoere** » 23 Nov 2009, 20:05

Responce from Hans:
Hi Havard,
well, we collected the very same species on the wood in the Huallaga and its affluents. Besides this Cochliodon type with spoon shaped teeth you can also find a "real" Hypostomus in the rithron, means in the current water body on pebbles and stones. There, in the deep waters - they live together with the Shampupa Panaque sp..
Anyway, I do not have scientific names for both species, most probably they are undescribed or even hard to identify due to old type material I haven´t seen. Let me state, that this particular area around Juanjui is not well collected, yet. I do not know a single scientific work on the Loricariidae from there with helpful information.
Cheers, see you next friday!
Hans

Haavard Stoere · Post by **Haavard Stoere** » 24 Nov 2009, 00:27

It takes God several thousands of years, but we can create a new species in minutes

The pictures will be in the next batch to jools sometime later than today.

Thanks

Post by **Shane** » 24 Nov 2009, 05:09

It takes God several thousands of years, but we can create a new species in minutes

Too true. And, what we label a "species" is just a single representative from a single location of a complex gene pool traveling along an evolutionary path.
-Shane

Id on pleco from Rio Huallaga

Id on pleco from Rio Huallaga

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