i just found 9 black mollies in my 20 gallon and i got in my tanks hang-on nursury. what should i do and you are interested in buying black mollies go to the classifides on this forum. thanks
You should seperate them from the rest of the fish in your tank, (as you have done) Then feed them crushed flake food, or another type of livebearer food. Mollies are really easy to raise, and once your fish get big enough not to be eaten (depending on the fish in your twenty gallon) they can become an addition to your aquarium, or perhaps a trade at a Local fish store, Good Luck!