Female mollies have bulky figures; they’re wider than males at the rear of the abdomen for breeding purposes. When pregnant, she will take on a bulging, lumpy appearance. Her fins are shorter; the anal fins are triangular.

How can you tell if a molly is male or female?

Quote from video: And the anal fin is on the bottom. As you can see there that little thing right there if it has like a fan tail shape to it it is a female. And if it has kind of like a string.

How big do female mollies get?

Four to four and a half inches is the normal size range of a full-grown molly. This length is rather manageable, and allows them to be kept in reasonably small aquariums. Sailfin varieties can get even bigger. They will often reach lengths that are closer to five or six inches.

How big do male mollies get?

Adult mollies reach up to 4.5 inches in length. Female molly fish grow bigger than male mollies — males grow to around 3.5 inches in length. Males are skinnier than females too, while females have rounder abdomens.

How do you tell if a molly fish is pregnant?

Quote from video: If your female moly is pregnant or not so the first sign is swollen belly. The most apparent and the easiest sign to spot in pregnant molly is a swollen or the enlarged. Belly. So look for the stomach

How long is a molly fish pregnant?

The gestation period of a molly fish is around 60 days from being fertilized to giving birth. Something interesting that not many know are female mollies can store sperm for months and may fertilize eggs as often as every 30 days, even when no male is present in the tank.

Do mollies breed easily?

For the most part, mollies are very easy to breed. A single female can produce over one hundred baby mollies, also called fry, in one live birth. They also come in a variety of colors, and work well with a wide community of other fish. Prepare your tank and yourself beforehand, and breeding mollies should be a breeze.

How long does it take for molly fish to get to full size?

It will take around one to two months for your fry to grow large enough to be introduced into your standard aquarium. The fry should be larger than the mouths of an adult molly fish. Do not move the molly fry until you are sure they are ready to handle your larger tank.

What is the smallest molly?

Shortfin Mollies (Poecilia sphenops)



Shortfin Mollies are generally the smallest of the two groups, measuring up to 3 inches long, and they don’t boast the showy finnage of the fish in the other group.

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