Of all known species of fish, only about 1% of all are viviparous, or livebearing.
Livebearers include some of the most common fish found in the trade today : Anableps, Goodeides, Guppies, Halfbeaks, Mollies, Mosquito Fish, Platies, and Swordtails, for example.
Determining the sex of live-bearing fish is very easy (compared to other types of fish).
On first look males are usually smaller and more colorful than females.
Males also posses an external sexual organ - gonopodium, which makes it easy to differentiate males from females.
The gonopodium is a modified anal fin which is used to fertilize eggs. In the male, the anal fix is rod-shaped, while the female has a traditional fan-shaped anal fin.
A male guppy :
A female guppy :
Livebearers include some of the most common fish found in the trade today : Anableps, Goodeides, Guppies, Halfbeaks, Mollies, Mosquito Fish, Platies, and Swordtails, for example.
Determining the sex of live-bearing fish is very easy (compared to other types of fish).
On first look males are usually smaller and more colorful than females.
Males also posses an external sexual organ - gonopodium, which makes it easy to differentiate males from females.
The gonopodium is a modified anal fin which is used to fertilize eggs. In the male, the anal fix is rod-shaped, while the female has a traditional fan-shaped anal fin.
A male guppy :
The Sex of Live-bearing fish
Reviewed by stefzeer
on
November 16, 2018
Rating:
Reviewed by stefzeer
on
November 16, 2018
Rating:
No comments: