Search found 602 matches

by Karsten S.
Sun Aug 14, 2022 11:26 am
Forum: What is my catfish?
Topic: Catfish from Rio Nanay, Peru
Replies: 5
Views: 1197

Re: Catfish from Rio Nanay, Peru

Hi Daniel, thanks. fish 2 might be Trachelyopterus cf. galeatus yes, this would also be my guess.. fish 10 is Pterobunocephalus aff. depressus yes, this fits much better. fish 9 is an undescribed Bunocephalus I think I just took the best fit of the listed species but I agree Pseudobunocephalus amazo...
by Karsten S.
Sat Aug 13, 2022 3:53 pm
Forum: What is my catfish?
Topic: Catfish from Rio Nanay, Peru
Replies: 5
Views: 1197

Catfish from Rio Nanay, Peru

Hi, just came back from Iquitos... all from Rio Nanay: fish 1: https://static.inaturalist.org/photos/222128991/large.jpeg juvenile Auchenipterichthys coracoideus ? fish 2: https://static.inaturalist.org/photos/222129232/large.jpeg fish 3: https://static.inaturalist.org/photos/221952844/large.jpeg fi...
by Karsten S.
Sat Aug 13, 2022 12:18 pm
Forum: What is my catfish?
Topic: Whiptail ID
Replies: 8
Views: 1655

Re: Whiptail ID

Hi,
to me it looks rather like a hybrid (likely with R. lanceolata, possibly also other species), this species is quite commonly crossed with the red whiptails as the females of R. lanceolata lay significantly more eggs, juveniles are very often nevertheless quite red but darken with age.
by Karsten S.
Sun Dec 26, 2021 6:15 pm
Forum: What is my catfish?
Topic: Corydoras species
Replies: 6
Views: 3833

Re: Corydoras species

Hi,

although the colouration reminds a bit of C. nanus, the probability to find this species in the pet trade by chance is zero.

Best regards,
Karsten
by Karsten S.
Sun Dec 26, 2021 5:51 pm
Forum: What is my catfish?
Topic: Which type of parotocinclus do I have?
Replies: 6
Views: 2321

Re: Which type of parotocinclus do I have?

Hi, if these were sold as P. jumbo I would rather expect to have a by-catch of this species from north-eastern Brazil. I do agree that it is not P. sp. "Pernambuco" but IMHO (I have kept that species for some years) it is also not P. britskii although body shape and colouration is much clo...
by Karsten S.
Sat Feb 06, 2021 4:42 pm
Forum: Cat-eLog data issues
Topic: Paralithoxus cf. raso
Replies: 2
Views: 7969

Re: Paralithoxus cf. raso

Hi, the location is wrong for P. raso and also for L 435 (=LDA066), both froms originate from Amapa, Brazil. The pictures are showing a form that is IMHO certainly something different and nearly for sure it also did not come from Guyana. If you continue to use the page for L 435 you should update th...
by Karsten S.
Sat Feb 06, 2021 4:24 pm
Forum: What is my catfish?
Topic: Corydoras aeneus or melanotaenia?
Replies: 2
Views: 1280

Re: Corydoras aeneus or melanotaenia?

Hi,

definitely not Corydoras melanotaenia but C. aeneus.

Cheer,
by Karsten S.
Thu Jan 14, 2021 6:17 pm
Forum: All Resolved Issues
Topic: Pictures for your data base
Replies: 3
Views: 2212

Re: Pictures for your data base

Hi,

@bekateen yes, this picture is mine :-)

Image
Microglanis poecilus, Tapanahony river, Suriname

Cheers,
by Karsten S.
Sat Dec 19, 2020 6:05 pm
Forum: Cat-eLog data issues
Topic: Paralithoxus cf. raso
Replies: 2
Views: 7969

Paralithoxus cf. raso

Hi, the pictures on the species page of Paralithoxus cf. raso do not show P. raso and also not L 435 (which might be identical with P. raso ). The colouration is quite off, both species/forms have spots that are approximately the size of the orbital diameter. Furthermore P. raso has significantly lo...
by Karsten S.
Mon Dec 14, 2020 5:35 pm
Forum: All Resolved Issues
Topic: Pictures for your data base
Replies: 3
Views: 2212

Pictures for your data base

Hi, some more Suriname pictures from families I'm not too familiar with, so better double check before uploading (if you want to use them on the species pages)... Most IDs should be correct. https://www.l-welse.com/gallery/files/3/9/9/8/centromochlus_punctatus_4053.jpg Centromochlus punctatus , Tapa...
by Karsten S.
Sun Dec 13, 2020 4:21 pm
Forum: Cat-eLog data issues
Topic: Ancistrus temminckii species page
Replies: 2
Views: 4966

Re: Ancistrus temminckii species page

Hi, yes, also to my experience Haakon is very knowledgeable and I guess he knew where the fish came from. I meant both, close-looking as well as geographically close as this is near to the Surinamese border. Oh, the ones from Yann are all from the same place, interesting. The ones I caught there had...
by Karsten S.
Sun Dec 13, 2020 3:11 pm
Forum: Cat-eLog data issues
Topic: Ancistrus temminckii species page
Replies: 2
Views: 4966

Ancistrus temminckii species page

Hi, the first picture seems to be ok, but without knowing the origin it is difficult to be sure in this genus. All the other pictures look to me like Ancistrus forms from French Guyana that are not identical to Ancistrus temminckii . https://www.l-welse.com/gallery/files/3/9/9/8/ancistrus_temminckii...
by Karsten S.
Sun Dec 13, 2020 2:48 pm
Forum: All Resolved Issues
Topic: Lithoxus spp.
Replies: 1
Views: 1038

Lithoxus spp.

Hi,

L 217, L 256 & L 431 are all Paralithoxus.

Cheers,
by Karsten S.
Sun Dec 13, 2020 2:45 pm
Forum: Cat-eLog data issues
Topic: Paralithoxus planquettei species page
Replies: 0
Views: 4695

Paralithoxus planquettei species page

Hi, the first picture is no Paralithoxus planquettei , do you know the catching location ? In the Lithoxini revision of Lujan et al. table 2: "white spots on body: absent", see also here: Paralithoxus planquettei how they do look like. The pictures from Yann are unidentifiable. Cheers,
by Karsten S.
Sun Dec 13, 2020 11:58 am
Forum: Cat-eLog data issues
Topic: Corydoras filamentosus & CW143
Replies: 2
Views: 4927

Re: Corydoras filamentosus & CW143

Hi Eric, in Corantijne river system (Sipaliwini river) we have three Corydoras with similar colour pattern: - Cordoras filamentosus : lineage 1 - Corydoras sipaliwini : lineage 9 (= CW114) - Corydoras sp. "CW143" : lineage 8 The picture from Raphael Covain in the link (MHNG 2707.015-SU07-6...
by Karsten S.
Sat Dec 12, 2020 5:19 pm
Forum: Cat-eLog data issues
Topic: Corydoras filamentosus & CW143
Replies: 2
Views: 4927

Corydoras filamentosus & CW143

Hi, Corydoras filamentosus belongs to acutus group, lineage 1. Similar story as with C. spilurus , the tissue sample used within the framework of the phylogeny of Alexandrou et al. 2010 belonged to the sympatric CW143 which belongs to lineage 8. I have discussed this with Raphael Covain and he only ...
by Karsten S.
Sat Dec 12, 2020 5:05 pm
Forum: All Resolved Issues
Topic: Corydora spilurus
Replies: 1
Views: 925

Corydora spilurus

Hi, this species belongs to acutus group, lineage 1. In the phylogeny of Alexandrou et al. 2010 the tissue samples used belonged to CW138 and not to C. spilurus , that's why this species ended up in the wrong lineage. I have written an article on this topic in the BSSW report 3-2017 "Über die I...
by Karsten S.
Sat Dec 12, 2020 4:56 pm
Forum: All Resolved Issues
Topic: Corydoras(ln9) sp. "Llanos"
Replies: 1
Views: 931

Corydoras(ln9) sp. "Llanos"

Hi,

this species belongs to the aeneus group, lineage 7.

Cheers,
by Karsten S.
Sat Dec 12, 2020 11:15 am
Forum: What is my catfish?
Topic: Corydoras(ln9) sp. (Cw063)?
Replies: 2
Views: 1433

Re: Corydoras(ln9) sp. (Cw063)?

Hi, do you have any information from where those were imported, together with the C. similis ? I can definitely confirm C. similis and for the others CW063 could be an option. However, the specimen on the original picture has an even smaller caudal spot that is more elongated and a much more pronoun...
by Karsten S.
Sat Dec 12, 2020 10:57 am
Forum: What is my catfish?
Topic: Corydoras (ln5) id
Replies: 2
Views: 1392

Re: Corydoras (ln5) id

Hi, I would tentatively agree with CW029. I have not kept those myself, so I only know pictures of adult specimen and not too much about variability etc. However, the dark broad stripe going from the eye towards the dorsal fin spine insertion seems to me a good diagnostic feature of this form which ...