Just bought a juvenile clownfish size 1.70 inches, it came from a small colony of clownfish in our LFS. I already have a bigger clown in my tank for few months now and when I introduce the new clown the bigger clown that I think is female is twitching and chasing the new clown that I bought. It's just chasing not biting she just poking her head and just chasing then sometimes twitching. The new clown just keep on running but they both eating. Is it normal or she doesn't accept a new friend in the tank?