Jacuna or Jahuna Catfish???

I've seen these catfish at a Petsmart. They were in the caves upside down like straight vertical, like an arrow. In these like ceramic cave. They could be electric? Although I'm not sure there like three to four bucks a piece and Im thinking of buying one. But, I would like to know more info on this catfish. All I can tell you is that it was in a tank with a Killifish(their mouths are weird)and there black.

thanks