I have an apisto that was identified as female and not sure what specific type as of yet. And I bought a pair of laetacara curviceps and added them to my tank yesterday and this female has been very aggressive to the new guys ever since. She will seek them out from the other side of the tank and swim at them with her gills out and her body curved and chase them until they are out of sight. She does not do this with any of my other fish (2 angels, algae eater, and a school of rummy nose tetras). Is this normal?