You will need
- Names of the fins
Instruction
1
Consider the fish in the aquarium. Find out where the anal fin. It is located in the fish's belly, near the anus, closest to the caudal fin. This fin is unpaired. In the female this fin is triangular in shape, the male he rolled in a tube and is called "Ganapati". This fin is used for internal fertilization, because the fish is viviparous. On this basis it is possible to distinguish the sex of all live-bearing fish.

2
Some species of mollies (for example, Mollienesia sphenops) males are smaller than females. There is a pattern: the male is the more active and the more capable of producing healthy offspring than it is smaller in size. From sailing mollies male, on the contrary, larger than females.

3
The adult male of the Mollienesia velifera are distinguishable by the huge dorsal fin, like a sail. From this fin the fish got its name — sailing. While the female's dorsal fin is very ordinary, not particularly large.

4
Be careful in the store and on the market. Not always beautiful fish capable of reproduction. It happens that the owner of the aquarium buys luxury "mollies", which is paired fins end in large tassels. Unfortunately, the anal fin also ends with a tassel. This fish — industrial hybrid guppies and mollies. It's called happinese. This hybrid is sterile, and try to breed fish of this breed are useless.

Note
Of all live-bearing fish mollies the most capricious. They require water filtration. For breeding, the temperature in the aquarium should not be below 27°C.
Sailing mollienesia — a pretty big fish with good maintenance it grows to 12 cm, so for a pair of these fish need a large aquarium, at least 50 L.
Keep in mind that all of viviparous fish tend to eat their fry. So the female before birth must be deposited into a separate aquarium, densely planted with plants that the fry could hide. You can use special tools to isolate females.
Sailing mollienesia — a pretty big fish with good maintenance it grows to 12 cm, so for a pair of these fish need a large aquarium, at least 50 L.
Keep in mind that all of viviparous fish tend to eat their fry. So the female before birth must be deposited into a separate aquarium, densely planted with plants that the fry could hide. You can use special tools to isolate females.
Useful advice
Fry mollies feed with infusoria and other small live food. Food all mollies should enter the vegetable component.
To distinguish fry on the floor only when they reach sexual maturity.
To distinguish fry on the floor only when they reach sexual maturity.