What's a good schooling fish?

[Babyface63]

A lot of marine fish school, I have seen Tangs, Butterflies school also. But it is just like it has been said already up to the fish. The more comfortable they are in your aquarium, the less they will school. It's a type of defence for the fish.

Yet if you still want to try to add a group in your aquarium I would pick Bangai Cardinals. These once have been known to breed in captivity, so that would be then a nice extra.

No the Bengazi cardinals are aggressive. We started with 3 went up to 6 and they still killed each other. I am down to 2. In different tanks. The Pajamas cardinals are the good group. Even the one Bengazi killed a Pajama.