Just to put my 2 cents in. i would say for the most part as long as the tank was 2-3x as long as the fish at adult size and atleast 2x wide then it should be good for life. I do agree with the bigger is better though.
On the other hand. What would you say about someone who rescued an RTC from a bad home and put it in lets say a 240 at about a foot long. i know most people NEED to plan ahead with these fish but when you dont plan and its a " my tank is to small but WAY better than its current tank". im currently in that situation. i had a buddy who had an RTC about 8" in a 55 gal. didnt have a bigger tank nor did he have plans for a bigger tank. so i took him and actually sold alot of my fish to house this RTC as long as possible in a 240
On the other hand. What would you say about someone who rescued an RTC from a bad home and put it in lets say a 240 at about a foot long. i know most people NEED to plan ahead with these fish but when you dont plan and its a " my tank is to small but WAY better than its current tank". im currently in that situation. i had a buddy who had an RTC about 8" in a 55 gal. didnt have a bigger tank nor did he have plans for a bigger tank. so i took him and actually sold alot of my fish to house this RTC as long as possible in a 240