This is more than a few months down the line but I like planning ahead 
How aggressive are tigrinus catfish? Say in comparison to a RTC? Would growing them up from a midsize with larger cichlids curve its aggression? I had an RTC at about 22" and he ate nearly half my full grown cichlids (jack dems, and such) and my beloved 17" knifefish.... I know now that they arn't meant to be grouped with those fish but at the time he was just too cool to exclude.
Appreciate input, I'm figuring out what I'm going to stock my 420gal with
8ftx3ft.
How aggressive are tigrinus catfish? Say in comparison to a RTC? Would growing them up from a midsize with larger cichlids curve its aggression? I had an RTC at about 22" and he ate nearly half my full grown cichlids (jack dems, and such) and my beloved 17" knifefish.... I know now that they arn't meant to be grouped with those fish but at the time he was just too cool to exclude.
Appreciate input, I'm figuring out what I'm going to stock my 420gal with