monster fish

Hi guys, as the title says, I am wondering what the largest fish would be that could be kept in a 64 gallon tank for life? I like big fish but obviously this size of tank prohibits the keeping of any true monster fish. I guess anything large would have to be solitary, are we talking maybe a...

I have a beautiful Red Tail Catfish that I need to re-home. She's absolutely gorgeous and healthy. Voracious eater, determined to be the biggest fish in my 450. Striking black on white red tail. Please text for more info and pics. Thank you, Carlita 951-764-8794