I have read on many exotic fishing trip sites that you can eat a rtc.  They say the meat tastes like pork and they try to serve it at least once per fishing cruise.  I also have a friend in North Carolina who told me when his rtc got too big for his tank he ate it,  with no ill effect.  If it is toxic some of these people need to be warned, LOL.  Back on the subject of TSN x RTC, mine is a total pig now that he is acclimated to his new indoor pond.  I fed him 2 dozen night crawlers last night along with 4 jumbo uncooked shrimp(they're like 4" long a piece), 1 hot dog, and today I put the goldfish from my Q tank in there, and much to my suprise the swollen gut hybrid ate 4 of them, and they weren't exactly small( from 3" to 5")
lol.  If he eats like this I will have a mega monster on my hands in no time.  He is very docile also.  I am able to lift under his chin and bring his head out of the water slightly.  He just sits there and tastes me with his barbells(creapy).  Also tries to take my fingers off when feeding him worms by hand.  He will break the 2" mark shortly.  I will post updates regularly.  The other 2 catfish hybrids I have, are eating too, but the TSN x RTC kicks their ***es when they get in his way.  They are much more shy than him, they hide when I come around, he comes to the surface.