As we all know livebearers females can breed from 5 to 10 times with only one sex action. So i wonder do i have to wait until female starts breeding eggs and then give here male witch i want, or does it change anythink if i gave here another male just after first bred.

Let's say i have Red Eye Xiphophorus Helleri crosed with Pineaple Xiphophorus Helleri and my point is to get Red Eye fishes. So does it's change anything if i give here Red Eye male after first or second bred, or do i have to wait until she start breeding eggs and then give here Red Eye male to reach my goal.

You can put the pair together at any time and they'll start breeding when they're mature enough. If the female has been hit by another male, it will take longer for her to take the hit from the new male. That can vary in domestic Swordtails as they're Platy/Sword hybrids and Platy's will often take the latest insemination. If they've inherited that from their Platy ancestors, it may not take as long.

well on my case i bought many small swordtails to grow them bigger i put them on 1300ltr tank (that was my biggest mistake)and there they mixed. For now they are separated diferent colors in diferent aquariums, so i wonder how long it will take to clean up that mess i made. For now my white ones gave me like 3rd breed and still i get red ones swordtails.

ok this brings me to more misunderstanding

Female swordtails can store viable sperm in the folds of their oviducts for fertilizing mature eggs
when needed. This means that subsequent clutches of eggs in the females can be fertilized long after
contact with a male. A single copulation can provide viable sperm for fertilization for up to two
years, with a female giving birth to from five to nine consecutive broods from a single mating event
(Axelrod and Wischnath 1991).

so does this means that one "mating event" will decide everything for 5-9 broods?

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No. Jim Langhammer advised me of a study that indicates that recent matings are more likely to fertilize the eggs of helleri than older, stored spermatophores. However, one cannot trust the newer sperm to be the only ones fertilizing eggs, and as such any fry are going to be suspect. Nor is there any data to suggest that "newer" matings are less likely to occur if she has stored spermatophores.

And it should be noted that the female does not store "sperm" but spermatophores, which are basically canned sperm! She must release the appropriate enzymes to dissolve the casing, releasing the sperm inside. They seem to have an expiration date, but no one has determined precisely what that is.

so does it mean that some eggs can be from old mating, and some from new one?

Yes, it does. The majority will be from the more recent matings, but there is the chance of a few odd young having a different father.

question off topic, that pics below your nick, is that velifera you grown up, or just random pics?

My avatar is a male Xiphophorus birchmanni, the Sheepshead Swordtail. My friend took BOS Wild type Poeciliid in 2005 with him, and I managed to get this shot while he was in the show. Notice the fatty head bump, that's where they got the common name Sheepshead. This species has one of the largest dorsals of wild type Xiphophorus, very cool fish.

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Not that any study done on any wild species will tell us much about domestic hybrids, but further on this interesting topic, most Poecilia can and do have multiple paternity considerations. It's so highly variable, however, that it can depend upon anything from the specific population to the size of the female.

I've always found domestic hyb. Helleri to be ridiculously difficult to 'cleanse' of previous matings, while domestic hyb. Platy's will easily take their latest fertilization almost every time. Whether that's the case with all domestic hybrids I don't know, but the very nature of hybrids would suggest it won't be consistent.

Hey Mr. Mefford, are you about? I'd like to hear if your experiences with domestic Xiphophorus have shown a pattern, if I could please.

Keep us posted, Strikeris. I hope your hyb. Helleri are more cooperative than mine!

Birchmanni are one of my fave wild-type Swordtails. Definitly one worth trying if you venture into wild-types.