I don't understand what you mean with these +1, Rahel.
Anyway, The photos you showed are of TSN - tiger shovelnose catfish. Those that said this was a hybrid are clearly wrong. TSN is a big fish. RTC is bigger in both length and weight. Please acquaint yourself with the Pimelodidae family of fishes: click on each name and see the datasheet and photos:
http://www.planetcatfish.com/catelog/family.php?family_id=15
Here is RTC: http://www.planetcatfish.com/catelog/species.php?species_id=305
Have you read the stickies?
Sig means signature: Greenbud has a nice thread on his RTCs linked in his signature.
Got it... +1 means I agree with what u said
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