^^ That is my sweet, sweet Fiona. Or so I thought!! I bought a 10 gallon tank and started a sorority (with 4 girls) about 3 weeks ago. I followed the sorority sticky on all it's instructions. Fiona is OBVIOUSLY the dominant one. She nips and chases the rest of the girls. The aggression has gone down quite a bit, and their fins are repairing themselves (with my help of course). The girls are still aggressive with each other from time to time though.. I'm just stressing every time I see them nip. Should the aggression last this long or do I need to separate them?