Is It Normal For Kribs To Attack Each Other?

[guppy_man]

i want to know if it is normal for kribs to chase each other, i have 3 kribs, 2 female 1 male, the male chases both females away from everu cave, is this normal, i haven't seen any signs of pairing, they are just over 1"half, are they still a little small to breed?

or will they just need some time to get used to eachother?