How to stop sphyco cats?

I have 4 cats, a mom, dad, kitten, and elder female who is fixed. the mom, and dad fight with the elder everytime they see eachother. the eldest cat lives in my room now, and i am not shure how to brake this up. Mom had 3 kittens two are gone, and it has not gotten any better. ANY ideas would appreciated.
Answers:
I have a psycho cat too she would beat up all of our cats we decided to try something new we let them fight because we thought it was a dominance or territory think we let them fight then one of our kittens got big enough and kicked her butt she has been lovable ever since

---

Some cats are more aggressive by nature than others. Depending what other cats live near yours, there might be happy harmony all the time or the dreaded scenario of regular cat fights.

What can you do if you spot a cat fight to break it up, as it were?

The first thing to note is to try not to get right up close and in the middle of the fight. Two methods that work are:

1) using the cats dislike of water to your advantage - spray the most aggressive cat with water

2) to split up the cats use a large stick or other large piece of food, and place between the cats to physically separate them

Finally, remember to be careful and to ready to move out of the way if necessary - if a cat darts off, and there is also a danger that a cat might shift their attack to you if they are a particularly confident and aggressive cat, so be careful.

---

first get everyone else fixed it will aide in calming them.squirt bottle work best keeps u from getting nasty scratches...ot bites...which need to bee seen by a dr. cat bite andreally nasty scratches get infected easy. any way squriting the attackers should work...loud noise to spook them off the elder. food i'm not sure would be good it could make a whole new problem i would think. and if they got along before kittens then this would most likely be the cause.

---

Do what the 1st 2 people said.

---

There's an entire section about Cat Aggression on CatChannel.com. Here's a quick link to that section:
http://www.catchannel.com/behavior/defau...