thanks for the detailed explanation lemon
based on wiki
In biology, any group of fish that stay together for social reasons are said to be shoaling, and if, in addition, the group is swimming in the same direction in a coordinated manner, they are said to be schooling.
it is impossible for fish to school in a small aquarium
that is why i am searching for shoaling fish, group that stay together most of the time
if i keep 3 male mccoskeri, will they stay in group?
is it better to keep P. carpenteri, P. flavianalis and P. mccoskeri, 1 each instead?
thanks again