New fry, unsure who mated?

I have a 10-gallon tank with a number of fish in it and just found a small orange fry. I'm completely lost as to who may have mated. There is a female swordtail, a male mickey mouse platy, a male yellow snakeskin guppy, a male(?) pink tuxedo guppy, a female albino cory, and a female peppered cory. Given the fry is orange, I am assuming the mickey and swordtail somehow mated? I don't know if that's possible. However, the pink tuxedo guppy is looking a little fat and is harder to sex so perhaps the other guppy mated with it and the outcome was orange? Does anyone have any ideas? I'm trying to figure it out so I can separate them before I get even more fry and go further over my bioload.

 

Livebearers can hold onto sperm from a male for a really long time before actually deciding to give birth.
They can give birth multiple times without a male being present in the tank.

 

Livebearers can hold onto sperm from a male for a really long time before actually deciding to give birth.
They can give birth multiple times without a male being present in the tank.

They've all been in there for months except the two guppies, who were more recent. How long can they hold onto them for?

 

A really long time, they she may also e able to breed with the platy.
Honestly selling her or putting her in a different tank will be the best if you don't want any fry. Just keep it a male only livebearer tank.

 

This is super easy to fix. Yo don't have to do anything at all. The fry will be eaten by your fish since they are very tiny. Don't overfeed your fish and that will definitely ensure the fry are eaten.

 

Got a pic?

I’d put my money on the swordtail.

 

The fry are orange? I'd make sure the Platy is sexed correctly.

Otherwise hybridisation is absolutely possible among the livebearers.

 

The fry are orange? I'd make sure the Platy is sexed correctly.

Otherwise hybridisation is absolutely possible among the livebearers.

The platy is definitely a boy. When I'd gotten him, I got a second mickey mouse without realizing it was a girl and separated her a bit late. I have 6 female mickey babies in another tank with her now. Here's a picture of the boy though.

Got a pic?

I’d put my money on the swordtail.

Here's the pictures I could get of the fry. Looks orange to me. It's the only fry I've seen in there too.

 

They've all been in there for months except the two guppies, who were more recent. How long can they hold onto them for?

Most females of ovoviviparous livebearers such as these, can store sperm packets for over a year. And not just a couple of months as some try to claim.

The platy is definitely a boy. When I'd gotten him, I got a second mickey mouse without realizing it was a girl and separated her a bit late. I have 6 female mickey babies in another tank with her now. Here's a picture of the boy though.

Here's the pictures I could get of the fry. Looks orange to me. It's the only fry I've seen in there too.

The fry looks a bit stretched in shape. I'd assume it's a swordtail fry.
It doesn't have to be a cross. Could be a pure swordtail. Depending if it's produced by a stored sperm packet from a former mating.
Platies and swordtails can cross with another. However, the guppies won't breed with platies nor with swordtails.