beautiful pic of your's john, looks like your channel cat was screaming lol. Yeah, anyways, rtc x tsn as many people here can attest make it to 3' very fast. No one has had one long enough to say how large they can get yet. I have one close to 3', and there are several other members with them at this size or larger. In thailand they have been caught over 40 lbs, and around 3 1/2'. To say they least you should plan on housing them like you would a tsn or a rtc. Plan for a 4' monster and hopefully he'll never make it to more than that seeing as how you would have to have a tank like john's above for one much larger. They are amazingly tame and you can pet them and hand feed them like the rtc. They don't spook as easily as tsn, but they are extremely predatory like tsn. They stay a gorgeous dark brownish green hue, and their spots get smaller as they grow. They really vary in looks from individual to individual. Some look like rtc with tsn markings, others look like tsn with a rtc head, and so on, and so forth. There's a wealth of info that you can find with a simple search or also by looking up in the stickies above the catfish forum. Good luck.