How to distinguish the female fish from the male

To distinguish fish by sex is not easy. This can be done only visually, but in this case, the result can be unreliable. It is much easier when buying to ask the seller. But even the person selling fish, he does not always know who is male and who is female. Try to make a comparative analysis of individuals by their appearance.

Instruction

1. To determine the size of the floor fish is quite difficult. Females are always smaller than males. In preparation for the spawning females, an increase in size of the abdomen, when the males of all remains.
   
2. You should pay attention to their color. Males have bright color, females conversely, often have a nondescript appearance.
3. The fins and tail in males usually longer than females. The color is bright and rich. Sometimes a noticeable change in coloration of the fins during spawning. At this time, they become brighter, there is an additional pigmentation.
   Fin coloration of females is unchanged.
4. If you can't distinguish males from females, but I see the visual difference of their structure, it is likely that you have opposite-sex fish, and perhaps in the near future there will be offspring. If there is a difference, contact the pet store. Consult with a specialist and buy another fish.