They do look like kanei

Steve

I described kanei in 1997. The original type specimens did not have spots on the snout. I agree that C46 is probably C. kanei, but I am not convinced that sp. "Rio Branco" (the one with the spotted snout) or (especially) C26 represent C. kanei.

Steve

IMO it is a juvenile Pseudompimelodus raninus. You may find this fish recently listed (including on Planet Catfish) as Batrochoglanis raninus due to some impending changes by Oscar Shibatta. I personally have doubts about the use of this name but that is another (long) story. They reach between 10cm...

I did a short article on these fish in 1999 in Catfish Compendium entitled "(Not) Synodontis pardalis Boulenger, 1908". The fish were being sold and shown as the above fish. After looking at the figure and 'examining' the type specimens of pardalis which are at the Natural History Museum (...