Hi, ive got 2 female angel fish that are around three years old and have been together since they where babies. they have recently just started fighting and they seem to be getting worse especially when they are laying eggs (they dont bother the other fish and they dont fight when you feed them either), they are both around 9cm long and in a 50 litre tank with 2 rosy barbs a sailfin mollie and a hoplos cat fish, what i want to know is if this is normal behaviour or should i separate them?

on the possitive side tho ive have been offered a jewel 400 so looks like they'll be getting a bigger tank anyway. do you think that would ease the tension? or would you recommend still getting rid of one?