Guppies are small aquarium fish. They are very popular with aquarists because of their bright colors and unpretentious conditions of keeping. Determining the sex of a guppy is not at all difficult.
It is necessary
- -live aquarium fish;
- -attention and logic.
Instructions
Step 1
Guppies are viviparous aquarium fish, peaceful, unpretentious and very beautiful. Sorting of guppy fry can begin as early as two weeks. This is best done after feeding. At two weeks of age, in female guppies, a dark speck becomes noticeably on the abdomen near the anal fin. True, not all individuals show it at the same time, therefore, sorting is performed repeatedly. In light-colored rocks, the speck is light, not dark, it does not have a silvery tint. In males, it is absent, the abdomen has a uniform silvery tint.
Step 2
Females of guppies are much larger than males, grow up to 5-6, and sometimes up to 7 cm. The body length of males does not exceed 3-4 cm. The difference in size is one of the main, most noticeable differences that make it possible to determine the sex of the fish.
Step 3
Female guppies are usually gray in color with a greenish or purple tint, and the caudal fin is small. Males are very beautiful, have a bright, attractive coloration. Multi-colored spots, strokes, patterns on their bodies shimmer with all the colors of the rainbow. The tail and fins are long, bushy and, depending on the breed, have a variety of shapes. With good feeding, the difference in color becomes noticeable as early as one and a half to two months.
Step 4
The male guppy has an elongated, laterally flattened body. The body of the female is also elongated with a more flattened posterior part. It is difficult to determine the sex of a fish on this basis, especially in the absence of experience.
Step 5
The anal fin of male and female guppies has a different structure. In females, it is rounded. In males, it is elongated, pointed. Later, at one and a half to two months, it begins to curl up. The genopodia is being formed. True, not all individuals have this trait at the same time. Sometimes it is possible to confidently determine the sex only at 3 - 4 months, which is associated with the rather often manifested hermaphroditism of fish.
