You will want to make sure any additional fish are larger than the Pixy Hawkfish due to their tendency to harass smaller fish... This will make a coral beauty a good pick. Maybe a marine betta or a wrasse of some sort.
It depends on the fish really. I had a six line that was very nice and calm. He never bothered anyone. He decided to go carpet surfing though and died. A top on the tank is a good idea with wrasses.
It depends on the fish really. I had a six line that was very nice and calm. He never bothered anyone. He decided to go carpet surfing though and died. A top on the tank is a good idea with wrasses.