I am completely new to fish tank s. For the last year I have had just 5 minnows. A couple of weeks ago I bought 2 Dalmatian Molly's, and now I strongly suspect one is female and pregnant. Would it make the remaining molly miserable off I was to give one away to a friend as I don't particularly want them breeding continually. The guy in th he pet shop claimed at the time they were both female, but now I know different.