Mollies, like guppies and platies and swordtails can all have multiple broods after being fertilized by one male. So if the dalmation fertilized her then she could have young resulting from that mating up to 5 or 6 times. Even without ever being with him again. And the same thing applies to fish bought at the store. If a female is mixed in with many types of males then it matters not what male you buy to accompany her, she is no doubt carrying young from a male she was exposed to in the store, or the wholesaler. And will continue to drop young from that male even if she is alone with a male of your choice.
