Aggressive female swordtail

[littlemi]

Hi all.
I have a 25ltr with a couple of male guppies, 2 cardinal tetras, 2 black widow tetras, 2 x corydoras and finally 2 female swordtails. Unfortunately one of the swordtails died this weekend so I replaced her with like for like. I have a new femail swordtail but she is rather aggressive especially towards the other swordtail... The rest of the tank is fine all getting on but she's upsetting the party what can I do??
Thanks.

 

[Delapool]

Hi, welcome to the forum

The link below on stocking may help. It may perhaps be that the tank is too small for one to move "out of sight" of the other. You could try also creating some hiding areas if not already the case.

AqAdvisor - Intelligent Freshwater Tropical Fish Aquarium Stocking Calculator and Aquarium Tank/Filter Advisor