Cat aggressive other cats

I have had my cat Lana since she was 9 weeks. I had my tuxedo Ginsy (now 7) at the time and after a few weeks they were best buds. Fast forward 3 years and I now have 3 more cats. 1 (Fem) of them I have had for 1 year and Lana still continues to hiss and growl at her. Fem tries to play but she continues said behaviour and sometimes will attempt to hit. I have two new kittens and she's doing the same thing. She's so sweet with us -little skittish- and Ginsy. Are some cats like this? They just don't like other cats introduced?

Did you go through the formal introduction process?

Does Luna play? Do you play with Luna? 

They don't fight, correct? Just hissing, growling and an attempt to swat? And then Fem moves on and gets the hint?

I would probably try to get Luna and Fem to either watch each other play or have them play together. And after the play have them each together. I would also give them love (get them to purr when the other one is around (or give them love near each other).

If they aren't fighting it isn't too serious but it would be nice if they would just get along. If cats play and eat together then they tend not to be fearful of each other and therefore tend not to feel like they have to be so defensive.

I have never introduced kittens so I don't exactly know the nuances of doing that. Hopefully others can help with that. 

Cat seem to have their favorites and sometimes fear others more but I truly believe that all cats can get along (or at least the vast majority using play, food, height and love).

Feel free to ask anything.

CalicosRSpecial said:

Did you go through the formal introduction process?

Does Luna play? Do you play with Luna? 

They don't fight, correct? Just hissing, growling and an attempt to swat? And then Fem moves on and gets the hint?

I would probably try to get Luna and Fem to either watch each other play or have them play together. And after the play have them each together. I would also give them love (get them to purr when the other one is around (or give them love near each other).

If they aren't fighting it isn't too serious but it would be nice if they would just get along. If cats play and eat together then they tend not to be fearful of each other and therefore tend not to feel like they have to be so defensive.

I have never introduced kittens so I don't exactly know the nuances of doing that. Hopefully others can help with that. 

Cat seem to have their favorites and sometimes fear others more but I truly believe that all cats can get along (or at least the vast majority using play, food, height and love).

Feel free to ask anything.

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No fighting or aggression on Fem's part. She thinks they're playing until Lana swats. But not actual fighting. I slowly introduced her a year ago when I got her. I tried Feliway, giving treats for positive interactions, playing with them together but Lana still growls and hisses.

I play with Lana and her and Ginsy (the oldest) play together and cuddle, but she's aggressive with the other cats. I try to have them all get along, but she's only nice to the younger ones. I just thought that after a couple of months Fem would grow on her and it's been a year and she's still aggressive.

I wonder if Lana might fear that Fem will take Ginsy's attention.

How do Fem and Ginsy interact? 

When do these negative interactions happen? Is Ginsy around all the time, most of the time, are they in the same areas or random?

I would really try to get Lana and Fem to play either watching each other or actually playing together. If you are playing with Fem see if you can play with Luna on a cat tree looking down. And then try to give them treats or food near each other. If you see them where Lana is going to swat try to distract with play. I also like to give love (pet, get them to purr) when they are near each other (on either side of me). IF they do hang out with you and each other.

It sounds like Lana is a little insecure but that can be changed. 

At least they are not fighting. So it isn't too serious.

Lana is a bit older and Fem is still really young and filled with energy so their could be an energy imbalance.

See if the play helps get them together a little. 

My cats have their favorites so it is not unusual at least in my experience. But hopefully what I mention will help in getting them closer.