Quote:
Originally Posted by Chrisson  I might be getting a new tank and my brother likes the Sailfin Molly and would like 2. I've been getting lots of different information about them and not sure If I can keep 2 or not. So my question is can I keep 2 in a tank and are they aggressive in anyway? |
Two mollies in one appropriately-sized tank is perfectly fine... as long as they are two mollies of the same sex. Having one male and one female would likely stress the female out due to the males frequent attempts to mate.
Be aware, though, that female mollies, like most female livebearers, have the ability to store sperm for months. So even if you buy two females, if they were kept in a mixed-sex tank at the store, you could potentially end up with several batches of fry.
Similar Aquarium Fish Forum Threads 
