Guppies & mollies - yes.
Platies & swordtails- yes.
Platies & mollies- no.
Swordtails & mollies- no.
Guppies & platies- no.
Guppies & swordtails- no.
AMAZON Mollies & most other ovovivaparous livebearers- yes.
Ordinary mollies can't do it, but Amazon mollies have virtually no males of their own, but can be fertilized by most anything else so they don't need males.
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