How long will it take? Well...that's kind of hard to answer, without knowing how long she's been pregnant, or what she looks like. If she's REALLY fat...I'd say within a week. Just to be safe.
Oh, and a note...try not to buy very pregnant fish. You can stress them out a lot, with moving them from the store, and acclimating them. Sometimes this can cause birthing problems, or even cause her to abort them.
If she doesn't give birth in 3 or so days, take her out of the breeder. She can also get very stressed in there, and that can also cause problems.
Just a warning, and congrats on the new fish!
Oh, and a note...try not to buy very pregnant fish. You can stress them out a lot, with moving them from the store, and acclimating them. Sometimes this can cause birthing problems, or even cause her to abort them.
If she doesn't give birth in 3 or so days, take her out of the breeder. She can also get very stressed in there, and that can also cause problems.
Just a warning, and congrats on the new fish!