I just got 5 of these guys, and their barbels seem to have been somewhat damaged between the store's tank and mine, not completely gone, but they're kind of uneven lengths, and one looked like it was bent in half... I know catfish barbels are generally supposed to grow back okay over time, is it the ...

only discussion of breeding these guys that I've found is as follows (from http://www.mongabay.com/fish/siluridae.htm ):

"Breeding is rare and usually accidental. Try feeding a pair mosquito larvae, Daphnia, and bloodworms to get them in spawning condition. Stimulate the rainy season to initiate ...