I had a redtail get over 2ft. in less than a year! I was stupid back then he was in a 125 gal. Eventually he got to about 27 inches and stopped eating. After not eating for like 3 months I got worried and put feeders in. Need I say more, let the ich/fin and tail rot begin. I didn't know anything about desiese then. So he died. If I kept one now i know to start him out in my 350 gal pond and eventually be moved to a bigger pond. I am in the process of getting a bigger pond (750 gal) for my rtc x tsn hybrid. He's grown 5 inches in 8 months, but he's went through some stressfull stuff with 2 moves in that time period. I would say if you are getting a rtc, make sure that you have a tank that can house a 2 ft. fish within a year. I'd say start out in about 240 gal. and eventually step up to around 1000 gals or so for aquarium. Probably the 750 gal pond I am making would do fine also. it will be 8 ft dia with a huge footprint since it is round. Also is about 3ft. deep. So if you go the aquarium route i hope you got some moolah laying around, and if you go the pond route i still hope you got some, but not as much. With that said i think that anyone with the fish' needs in mind could make a great owner of one, you just need to make sure you are ready finacially, and mentally. Do you have what it takes to do the water changes for a 100 lbs. catfish 20 years down the road in a 1000 gal aquarium?