pls help with below cat's id
- Thread starter GarNiac
- Start date
Picture? I don't think you can on a live or non-anesthetized fish.
Here is the thread that's been most helpful on adults and sub-adults: Filamentosum vs. Caprapretum - http://www.monsterfishkeepers.com/f...mentosum-vs-Caprapretum/page4&highlight=tooth
page 4 is the most useful - the info from Dr. Lundberg/Necrocanis
(PCF sister thread: http://www.planetcatfish.com/forum/viewtopic.php?f=17&t=31975&p=257709#p257709 )
All the credit goes to Dr. Lundberg and Necro:
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2004 paper
Brachyplatystoma capapretum: a New Species of Goliath Catfish from the Amazon Basin, with a Reclassification of Allied Catfishes (Siluriformes: Pimelodidae)
John G. Lundberg and Alberto Akama
Abstract
Brachyplatystoma capapretum n. sp., a pimelodid catfish from the Amazon River, is described and diagnosed by its fine, densely spaced outer jaw teeth and relatively few rows of straight, depressible inner teeth; juveniles with large dark blotches on and above lateral line; adults with exceptionally dark pigmentation dorsally, abruptly countershaded near lateral line; broad, shallowly forked caudal fin. The systematic position of the new species was investigated with a maximum parsimony phylogenetic analysis of morphological characters. The resulting cladograms identify a nested set of unambiguous characters supporting the following monophyletic groups and taxonomic recommendations. Brachyplatystomatini new tribe is established for Brachyplatystoma and Platynematichthys and supported by two synapormorphies: two-chambered gas bladder connected by paired lateral tubes; cleithrum with blade-like ventral crest between pectoral spine articulation and posterior process of cleithrum. The monotypic genera Goslinia and Merodontotus are placed in synonymy with Brachyplatystoma characterized here by two synapomorphies: suspensorium greatly expanded mediodorsally, forming a massive plate approaching parasphenoid; juveniles with greatly elongated caudal-fin filaments developed from single outermost, unbranched principal rays. Bleeker's genus group name Malacobagrus is employed as a subgenus within Brachyplatystoma to include B. filamentosum, B. capapretum, and B. rousseauxii. Monophyly of Malacobagrus is supported by five synapomorphies: adults developing extensive reticulated system of lateralis tubules on body; Weberian complex with thick, ventral bony platform at gas bladder attachment; subquadrangular shape of opercle; pectoral spine with sulcus along anterior edge; small, non-sutured endopterygoid. Two unique synapomorphies place B. capapretum and B. filamentosum together as sister species: juveniles with spots on and above lateral line; caudal peduncle subcircular in cross-section.
Not sure this abstract really helps any unless you plan on dissection to determine species. It does show that filamentosum and capapretum are sister species. Also they have their own subgenus with rousseauxii
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Ok so to summarize what Dr. Lundberg has sent I will say that in adults filamentosum has longer maxillary barbels extending to or beyond the start of the anal fin, it is lighter in coloration, it has longer lobes on the caudal fin, and the caudal fin is slightly rounded on the outer upper and lower edges, the adipose fin is slightly larger in comparison to the overall fish, body proportions are relatively similar. Dr. Lundberg retains that the easiest way to tell the two species apart is the tooth patches. Before I get int the tooth patches I would describe capapretum as having maxillary barbels that extend to the begining of the pelvic fins or just beyond, it is much darker in coloration as an adult as well, the outer edges of the caudal fin are more straight, and the caudal is less deeply forked, the adipose fin is smaller in comparison with filamentosum, comparing skull pics provided I would have to say that capapretum has a more pointed and less broad snout than filamentosum which has a slightly rounder and more broad snout. capapretum also has slightly shorter mental barbels. As for the tooth patches here is the description provided.
"described and diagnosed by its fine, densely spaced outer jaw teeth and relatively few rows of straight, depressible inner teeth"
I will also attach a drawing that I have done quickly myself to demonstrate the differences in the tooth patches. This drawing is not exact and is just a representation to show the differences.
The document that Lundberg sent is very interesting as it outlines the realignment of all the brachyplatystoma back in 2005.
NECROCANIS' DRAWING OF TOOTH PATCHES: go to the linked thread, page 4, to see
Please not that all references and summaries made here are from Dr. John Lundberg, and his document
Brachyplatystoma capapretum: a New Species of Goliath Catfish from the Amazon Basin, with a Reclassification of Allied Catfishes (Siluriformes: Pimelodidae) John G. Lundberg and Alberto Akama. Copeia, 2005(3) pp. 492-516
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I may have stirred the pot a little with this, but I will say that Dr. Lundberg says that "The jaw teeth textures are absolutely diagnostic for fila vs capa except in the smallest juveniles/post-larvae and the color feartures hold up with some variation and one must consider the changing patterns between juveniles and adults within species but both are distinctive." end qoute.
So imo he's saying that they have distinctive coloration and that to be 100% which species you have you must examine the tooth patches of live individuals. Sub adults and adults are far easier to distinguish based on morphological characters.
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... all of the above from Necro's posts. He never let us see the original of Lundberg's response.
Here is the thread that's been most helpful on adults and sub-adults: Filamentosum vs. Caprapretum - http://www.monsterfishkeepers.com/f...mentosum-vs-Caprapretum/page4&highlight=tooth
page 4 is the most useful - the info from Dr. Lundberg/Necrocanis
(PCF sister thread: http://www.planetcatfish.com/forum/viewtopic.php?f=17&t=31975&p=257709#p257709 )
All the credit goes to Dr. Lundberg and Necro:
*******************************************************************************
2004 paper
Brachyplatystoma capapretum: a New Species of Goliath Catfish from the Amazon Basin, with a Reclassification of Allied Catfishes (Siluriformes: Pimelodidae)
John G. Lundberg and Alberto Akama
Abstract
Brachyplatystoma capapretum n. sp., a pimelodid catfish from the Amazon River, is described and diagnosed by its fine, densely spaced outer jaw teeth and relatively few rows of straight, depressible inner teeth; juveniles with large dark blotches on and above lateral line; adults with exceptionally dark pigmentation dorsally, abruptly countershaded near lateral line; broad, shallowly forked caudal fin. The systematic position of the new species was investigated with a maximum parsimony phylogenetic analysis of morphological characters. The resulting cladograms identify a nested set of unambiguous characters supporting the following monophyletic groups and taxonomic recommendations. Brachyplatystomatini new tribe is established for Brachyplatystoma and Platynematichthys and supported by two synapormorphies: two-chambered gas bladder connected by paired lateral tubes; cleithrum with blade-like ventral crest between pectoral spine articulation and posterior process of cleithrum. The monotypic genera Goslinia and Merodontotus are placed in synonymy with Brachyplatystoma characterized here by two synapomorphies: suspensorium greatly expanded mediodorsally, forming a massive plate approaching parasphenoid; juveniles with greatly elongated caudal-fin filaments developed from single outermost, unbranched principal rays. Bleeker's genus group name Malacobagrus is employed as a subgenus within Brachyplatystoma to include B. filamentosum, B. capapretum, and B. rousseauxii. Monophyly of Malacobagrus is supported by five synapomorphies: adults developing extensive reticulated system of lateralis tubules on body; Weberian complex with thick, ventral bony platform at gas bladder attachment; subquadrangular shape of opercle; pectoral spine with sulcus along anterior edge; small, non-sutured endopterygoid. Two unique synapomorphies place B. capapretum and B. filamentosum together as sister species: juveniles with spots on and above lateral line; caudal peduncle subcircular in cross-section.
Not sure this abstract really helps any unless you plan on dissection to determine species. It does show that filamentosum and capapretum are sister species. Also they have their own subgenus with rousseauxii
******************************************************************************
Ok so to summarize what Dr. Lundberg has sent I will say that in adults filamentosum has longer maxillary barbels extending to or beyond the start of the anal fin, it is lighter in coloration, it has longer lobes on the caudal fin, and the caudal fin is slightly rounded on the outer upper and lower edges, the adipose fin is slightly larger in comparison to the overall fish, body proportions are relatively similar. Dr. Lundberg retains that the easiest way to tell the two species apart is the tooth patches. Before I get int the tooth patches I would describe capapretum as having maxillary barbels that extend to the begining of the pelvic fins or just beyond, it is much darker in coloration as an adult as well, the outer edges of the caudal fin are more straight, and the caudal is less deeply forked, the adipose fin is smaller in comparison with filamentosum, comparing skull pics provided I would have to say that capapretum has a more pointed and less broad snout than filamentosum which has a slightly rounder and more broad snout. capapretum also has slightly shorter mental barbels. As for the tooth patches here is the description provided.
"described and diagnosed by its fine, densely spaced outer jaw teeth and relatively few rows of straight, depressible inner teeth"
I will also attach a drawing that I have done quickly myself to demonstrate the differences in the tooth patches. This drawing is not exact and is just a representation to show the differences.
The document that Lundberg sent is very interesting as it outlines the realignment of all the brachyplatystoma back in 2005.
NECROCANIS' DRAWING OF TOOTH PATCHES: go to the linked thread, page 4, to see
Please not that all references and summaries made here are from Dr. John Lundberg, and his document
Brachyplatystoma capapretum: a New Species of Goliath Catfish from the Amazon Basin, with a Reclassification of Allied Catfishes (Siluriformes: Pimelodidae) John G. Lundberg and Alberto Akama. Copeia, 2005(3) pp. 492-516
***********************************************************************
I may have stirred the pot a little with this, but I will say that Dr. Lundberg says that "The jaw teeth textures are absolutely diagnostic for fila vs capa except in the smallest juveniles/post-larvae and the color feartures hold up with some variation and one must consider the changing patterns between juveniles and adults within species but both are distinctive." end qoute.
So imo he's saying that they have distinctive coloration and that to be 100% which species you have you must examine the tooth patches of live individuals. Sub adults and adults are far easier to distinguish based on morphological characters.
**************************************************************************
... all of the above from Necro's posts. He never let us see the original of Lundberg's response.
It's a beautiful Cap.! as you know when the fish get bigger, fila and cap are going look very similar! your cap is just as beautiful as the fila! its easier to ID them when they are young. What a fish tank you have !!!!!how many gallon in there ?
the guy who sent and did the packaging was so dump that he only used 2 layers of thin plastic bags and pathetically a small box for a 60cm fish. I rather not continue to talk about it.. it was the only piraiba in the country, and you could imagine how hard it is just to to find it else where.
