How old are mollies before you can tell what sex they are it looks like their all girl because they have bottom fin but does it take time to tell what sex they are?
Look at the fish's bottom side. If the "anal fin" is fan shaped the fish is a female, if the fin is thin and pointed like a nozzle then the fish is a male. In the male this fin is called a 'gonopodium'
mollies are a breed of fish, so there is a variety of mollies including the black lyretail molly, the ballon molly and the dalmation molly. But all mollies have pointed noses and their underbelly curves down but their back is more straight. Male mollies are bigger and thinner compared to female mollies. If you look near its stomach it will have longer fins compared to female.
Well it depends. I had a molly and she did not eat any of her babies. I had another molly and she did eat her babies. So if she starts to eat her babies make sure you take them out. Sometimes she looks like she will eat her babies, but she is helping them to start swimming. That what my first molly did. All mollies are different.
It helps them camouflage itself from predators. Although the answer above is true, here is a more informative answer. The bottom of the frog is a lighter color then the top. This is because if the frog is floating on top of the water, and prey or a predator looks up and the frog, the suns glare makes the frog harder to see. Also, there are darker splotches on the bottom so it doesn't show…