One of the most common representatives of viviparous fish is the guppy. Now they are often kept in aquariums, but originally guppies are "wild" freshwater fish of the tropics, named after the English priest and scientist Robert John Lemcher Guppy in the late 19th century.
Instructions
Step 1
Experienced aquarists note that guppies have a clear "sexual dimorphism", that is, it is very easy for them to distinguish a male from a female. Indeed, "girls" and "boys" guppies are not similar in shape, color or size.
Step 2
The length of female guppies is from 2, 8 to 7 cm. They are gray fish with a rounded abdomen and small fins. In female guppies, a clear rhombic mesh of scales immediately catches the eye.
Step 3
The length of male guppies is from 1, 5 to 4 cm. They are graceful, slender fish with a special organ - gonopodia (elongated anal fin). Unlike females, male guppies are bright, multi-colored, often with long variegated fins of various shapes. It is by the tail that you can determine the type of guppy. There are more than a dozen decorative forms and about ten types of coloring. With a combination of body type and color, over a hundred combinations are obtained. Fan-tailed guppies are very popular. Fantail guppies can be edged (the tail is like an isosceles triangle) and acute-angled (the angles of the tail triangle are from 30 to 50 degrees). Also, male guppies can be veiled-tailed (skirt), lyre-tailed, flag-tailed, shovel-tailed, spear-tailed, needle-tailed, as well as the "upper sword" and "double sword" types.
