All depends on morality, who you ask, your definition of life, how you think, etc.
Based on all the above, there is no real answer!
ask 10 people what the biggest fish for a 72x30x24 is (or should be) and you will get maybe 7 different answers.
I thought that she had gotten too big for her tank, moved her to a pond and she sits in one place all day long. But I am confident that she explores the whole pond at night.
my opinion, for what it is worth, is that if I saw a wykii needing rescuing and had a 240g to put her in for life , I would do it every time. If I were to purposefully buy a baby one for a 240g , I would think longer and harder............. But probably still buy her....... And that might well be a poor reflection on me (hence having a pond).
In the same family, h. Nemurus , especially the albino variety, although I am yet to see one anywhere close to their maximum quoted size of 25" , or h.filamentus.
There is the other red tail cat, h.wyckioides and h. Variagatus available but both will grow too big in its lifetime. most others are 8" ers.
Note that hemibagrus come with a number of tempraments, usually ranging from aggressive to psycho, but occasionally you find a placid one.