Hi,
I have a 4ft planted tank with 14 cardinals. I just bought another 20 cardinals
and 2 Congo Tetra yesterday.

I know it's kinda late for this question, but will the Congo Tetra bite or eat my
cardinals? They are about 7.0cm.

I also read somewhere that I need to get a few more Congo for them to school? What will happen if I just continue to have just 2?

Thanks.

MS