A missing piece to all of this are the B. filamentosum from the Orinoco River...I don't recall ever having seen one before, but I would predict they are an intermediate between the Amazon and Suriname varieties.
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A missing piece to all of this are the B. filamentosum from the Orinoco River...I don't recall ever having seen one before, but I would predict they are an intermediate between the Amazon and Suriname varieties.
Based on a study of Pimelodidae by Lundberg and colleagues, genetics show B. filamentosum from the Orinoco and Suriname to be more closely related to each other than either is to the Amazonian filamentosum.
http://www.bioone.org/doi/abs/10.1635/053.161.0110
But that's just genetics, without any discussion of morphological differences.
An update on the little guy, finally started eating. Idk what but seen a bulge on his belly.
Even in a lighter substrate, he maintained the dark colour, spots visible from mid dorsal to caudal fin, same as Brazil but too early to tell if it is even Suriname. Surely he ain't a Peru.
Anybody here have any experiences with small Suriname before?
The Piraiba from Suriname seem to have a greenish sheen when younger.. just like the one in this video.