Hi, as already correctly stated C 126 can be completely excluded, this number is a member of the elegans group. C. leucomelas is close but usually has a broader dark blotch. Also C 151 does not fit IMHO. I would rather suggest C 154 which can also be found in the trade quite often. However, this col...

Hi,

second option would be H. boulengeri which has a greatly overlapping distribution.
The most evident criterion for differentiating those two is the snout tip (naked vs. fully plated) which unfortunately is not clearly visible on the pics.
Color pattern would be matching for both.

Cheers,

Hi,

this is Brochis splendens (or Corydoras splendens if you prefer), I count 12 branched dorsal fin rays. However, this is rather a species complex and I would expect that one days it will be split into several species.

Cheers,
Karsten

Hi, yes, some years back I kept and raised quite good numbers of them without any big problems. First days I kept them in a small plastic boxes swimming in the parents tank and added java moss and tiny quantities of detrius (from the filter). After few days when they started to feed on brine shrimp ...

Hi, definitely a Hypostomus , but without any information about the origin those are close to impossible to ID. There are close to 200 species and forms, quite often with very similar pattern. And by far not all have a L number. There are many described species (that don't need a number) and also ma...

Hi,

to me it looks like Peckoltia lineola.

Cheers,

Hi,

there are several similar species like Corydoras caudimaculatus and Corydoras guapore, but in fact the describing author was refering to Corydoras ourastigma which is the long snoutet companion.

Cheers,

Hi, well yes, corys of different species also shoal together in the nature, I guess with mimicry pairs this holds true even more. But I don't think that the TS was refering to mimicry pairs/trios. However, you can also observe in nature that Corydoras do have a clear preference for their own kind. M...

Hi,

thanks again !
I only took the T. gyrina/creutzbergi with me. However, the brunnea & punctatus should be imported in the next weeks, but no space in my tanks any more...

So I thought we should better give them correct names before someone else takes them.

Cheers,
Karsten

Hi, next families... At Nickerie we caught Imparfinis pijpersi : http://www.l-welse.com/gallery/files/3/9/9/8/imparfinis_pijpersi_3952.jpg http://www.l-welse.com/gallery/files/3/9/9/8/imparfinis_pijpersi_3954.jpg This should be a safe ID. At Tapanahony we caught this one: http://www.l-welse.com/gall...

Hi,

thanks, I didn't really consider Tatia brunnea as the picture in Mol's book look quite different.
However, I don't know too much about woodcats and guess that colour pattern can be quite variable...
They were all caught in Tapanahony river.

Cheers,

Hi, besides Tatia creutzbergi ( gyrina ) that I already know from past trips we also caught three more species. The first one should be Trachelyopterus galeatus , right ? http://www.l-welse.com/gallery/files/3/9/9/8/trachelyopterus_galeatus_3783.jpg http://www.l-welse.com/gallery/files/3/9/9/8/trach...

Hi, thanks again. So far I only kept Ituglanis amazonicus for a short time as there were different information about their compatibility as tank mates reaching from no problem at all to all other fish died for unknown reasons. So I gave them to a friend who keeps them in a separate tank. They have i...

Hi,

thanks a lot, this was also my assumption.
There are two species listed for Marowijne, O. flabelliferus & O. reinhardtii.
However, as I'm not at all into Trichomycteridae...

So I guess it will be carnivorous like Ituglanis ?

Cheers,

Hi,

I don't have any idea what we caught there:





Any idea ?
It is quite small (only about 4 cm).

Cheers,

Hi,

this is Anicstrus macrophthalmus which comes from Venezuela and Columbia.
The amount of white spots can vary quite a lot in this species, sometimes they don't hava any or sometimes pattern is similar to L 184.

Cheers,

Hi,

the oddball looks like Corydoras copei. Some years back I also saw in a local pet shop few of those mixed in between C. trilineatus.
However, I'm not absolutely sure if mine and yours actually were/are that species or just some natural variation of the other species.

Cheers,

Hi,

Corydoras sp. "San Juan" is a trade name frequently used by exporters from Iquitos, Peru.
Yes, it could be C. napoensis.

Cheers,

Hi, I have serious doubts about the given identity(....aureum propably), so if someone is in position to give a valid identification, feel free to say so. you are absolutely right to have doubts. I'm not sure if Sturisomatichthys panamensis ever made it into the trade (and all the west andine specie...

Hi, The closest to this species is C133. I do agree on this ID, it's extremely close to the original picture in the DATZ magazine. However, I have to contradict to this statement: C. pavanelliae is a lineage 8 sub clade 4 (straight snouted) species C. pavanalliae is for sure no member of lineage 8. ...

Hi, 2x L201s ...and pickup next week a colony of L066s ... (otherwise we'd really love to get some L046s). ... I was thinking the L129s might be alright please don't keep different types of Hypancistrus in the same tank. They can and will crossbreed. I would rather separate the L 201 and the coming ...

Hi Eric,

bekateen wrote: ↑20 Jan 2018, 17:17 Is it an existing L-number?

as mentioned already in the abstract it's most similar to Spectracanthicus immaculatus.
I don't know any L number that would fit.

Cheers,

Hi,

I have the paper, Spectracanthicus javae is correct.

Cheers,

Hi, I also have some Hypostomus species mainly from Suriname (a few also from French Guyana). http://www.l-welse.com/gallery/displayimage.php?imageid=15577 Hypostomus micromaculatus http://www.l-welse.com/gallery/displayimage.php?imageid=14570 Hypostomus corantijni "Nickerie" http://www.l-...

Hi Erik, as you can see from the key to the genus there are no new species with distinct spots on body and fins. The L numbers known for Guyanancistrus from the affected areas all have distinct spots. - L 221/L 223 from Rio Paru - L 317 from Rio Jari There are two more numbers: - L 56 from Rio Aragu...

Hi, most of those whiptails are considerd to be hybrids. But afaik it's not absolutely clear if the "pure" red whiptail is a wild form or rather an aquarium strain obtained by selection. Very often you will find hybrids with R./H. lanceolata which are red as juveniles but when growing the ...

Hi Eric, no, this should not be the same. L 284 does not have spots on the belly and a quite different body shape. In L 284 the distance of pectoral to pelvic fins is much bigger than the distance between the two pectoral fin insertions (in H. velhochico nearly same). The dorsal fin is also shorter....

Hi,

ok, then this is not an argument in favour of H. parva but rather against.
The lower filament can also be missing / broken, but I guess it will be a different species then.
Without knowing their origin it's very difficult to ID whiptails.

Cheers,

Hi,

yes, it looks pretty much like Corydoras trilineatus even though the midlateral stripe usually is much more prominent. Is only one looking like this or has the complete group this untypical pattern ?!

Another option might be Corydoras copei.

Cheers,

Hi,

it looks like Hemiloricaria parva, but I'm not really sure.
With these pics it's difficult to say.
Do they have two filaments (top & bottom side) in the caudal fin ?

Cheers,