in schools or pairs?

[The Reefer91]

can i keep banggai cardinals be kept in schools of like 4-5? or should i get chromis for that? i want a schooling fish for my 180g when it's up

 

[Lev F.]

Banggers don't do well in schools. They usually pair up and the pair will kill the odd ones. If you want a good schooling fish, go for threadfin cardinals.