home Article How to tell if a goldfish is pregnant

How to tell if a goldfish is pregnant

Cock fish

In the breed of cockerel fish, sexual maturity occurs as early as 4 months, a white spot becomes a hallmark of the female’s pregnancy, and not dark, like in other fish, and of course, a rounded belly.

A feature of female cockerels is the process of birth itself: the male builds a nest from plants, and when the time comes he and the female freeze in this nest, then smoothly descend to its bottom, where the eggs are ejected. After that, the male protects the eggs for several days, from which the fry emerge, and then he is deposited, just like the female who gave birth.

tell, goldfish, pregnant

Reproduction of fish, like any other animals, is a very complex physiological process, which is always accompanied by a number of features and which is influenced by the environment, both natural and artificial.

Fish that, after fertilization, are ready for reproduction, often need to be kept in special conditions, but for this it is important to correctly determine whether the fish is really pregnant. Each fish breed has its own characteristics, which are expressed both in a change in the color of females and in an increase in the abdomen.


Females of swordsmen are ready to mate already from 8 months, because it is at this age that these fish end puberty. If a female swordsman is pregnant, a dark spot appears on her belly, and the belly itself takes on a rounded shape. Closer to childbirth, the tummy increases and takes on a square shape.


Such an aquarium fish as a guppy, which is also viviparous and very similar to swordtails, has its own characteristics of reproduction. To get pregnant, a female guppy does not need the constant presence of a male, this fish can throw fry several times from one mating performed.

It is quite easy to understand that the fish is pregnant: its sides and abdomen increase significantly. Just like in swordsmen, in guppies a dark spot is formed in the back, which increases in size closer to childbirth. Thus, the only difference between guppies is the repeated throwing of fry from one partner, and in swordtails fertilization occurs once, and the female is immediately removed.

Parrot fish

Bright and funny felling parrots are very popular today among lovers of home aquariums. These fish do not reproduce well, so they need special conditions. For example, for mating, the water in the aquarium is made warmer, and for throwing, a sink or shelter house is installed. The pregnancy of the fish is expressed by the usual signs. a swollen abdomen and a dark spot at the tail, but behavior is also changing: the female increasingly tends to the bottom and leaves the light.

Hatching time

After release and fertilization, goldfish eggs hatch after two to seven days. In water at 84 degrees Fahrenheit, fertilized goldfish eggs hatch after 46-45 hours; in water at temperatures between 70 and 75 degrees Fahrenheit, they hatch after five to seven days. Goldfish carry yolk sacs that supply food for two or three days. When their yolk sacs are empty, they are ready to eat live food such as brine shrimp and daphnia. The goldfish doesn’t care about its young boy at all. in most cases, adults eat fry whenever possible.

Mom to Be

The female goldfish looks pregnant when it is ready to release its eggs. In nature, mature female goldfish begin to produce eggs in late winter and early spring. As the eggs swell, women’s stomachs become thicker. Male goldfish also undergo physical changes as breeding time approaches: they develop white bumps on their gill covers and pectoral fins, which are the fins on their sides. At the same time, the males begin to chase the females around the tank and hit the sides and stomachs of the female. This should prompt the females to release eggs so that the males can fertilize them.

How to tell if a goldfish is pregnant

Goldfish won’t get pregnant; they are ovoid: the females swell with the eggs they release into the water and combine with the sperm released by the males. Breed of goldfish when they are about 4 inches long. Both female and male goldfish show physical and behavioral changes before releasing eggs or sperm called milt. Under the right conditions, goldfish reproduce easily, but often they eat eggs before their owners notice that they have been released.

Two goldfish swimming in a round bowl: Ziviani / iStock / Getty Images

Spring fever

Male and female goldfish reproduce when the water temperature rises. When the temperature in a pond or tank reaches 68 degrees Fahrenheit, the female goldfish releases hundreds, sometimes thousands, of eggs near aquatic vegetation. The male goldfish quickly releases their milk in the same area in order to fertilize the eggs. Called spawning, this process usually occurs in the early morning and ends three to four hours after spawning. Goldfish eggs stick to vegetation or wherever they are. Fertilized eggs are clear and golden brown; unfertilized eggs are white.

Breeding goldfish

If you have a goldfish with eggs and a goldfish, you can try breeding at home. Prepare a new goldfish frying tank and place a spawning mat or a new clean mop head that hasn’t been chemically treated in your fish tank. Check your fish early in the morning to see if they have spawned, and move the eggs of the goldfish to their spawning ground in a new tank as soon as they appear. Check for white, unfertilized eggs after 12 hours and remove them. Feed your goldfish three times a day when their yolk sacs shrink, but be careful not to overfeed them or pollute the water. Goldfish fry live food, powdered flakes and specialized liquid food.

Care for fry in the early days

The newly born fry can be left in the spawning grounds. If the number of newborns is large, they should be placed in several aquariums so that they do not lack space. Tightness leads to stunting, curvature of the spine and constant clashes between fish.

The water in nursery aquariums must be clean. Growing fry quickly contaminate it, so every 1-2 weeks it is necessary to replace 20-40% of the volume. Aquariums should be illuminated 12-15 hours a day. In the early days, you can leave the light on all night. The temperature must be maintained at a constant level without dropping below 23 ° C. The optimal indicator is 24-25 ° С.

It is important to ensure good filtration and aeration. The installation of a compressor with a spray is especially necessary when a large number of fish accumulate in a relatively small volume. If there is a filter, it is covered with tulle so that the fry is not sucked in.

Fry should be fed several times a day with fines. In order for the fish to grow well, they must not starve, so the food must be in the aquarium almost constantly.

For feeding the fry, you can use ready-made mixtures, but it is important to avoid overfeeding. Uneaten food quickly spoils the water, and fish can get poisoned. It is safer to use dried daphnia ground to a dusty state. It swims for a long time on the surface of the water without settling, and it is convenient for guppy fry to collect it. Live dust, rotifers, microworms and brine shrimp nauplii are used as source of animal protein.

On a note! To remove excess food, it is advisable to plant snails in the aquarium. By disposing of leftovers uneaten by fish, they will help avoid water pollution.

Feeders are not used for newborn fish. The food is spread evenly over the entire surface of the water so that none of the fry is hungry. They begin to accustom the fish to the feeder when they are 10-12 days old. At this age, it is already possible to determine the sex of the young: in females, a dark spot appears in the back of the abdomen. In order to prevent early pregnancy, fry are seated according to gender in separate containers.

Care Tips

What else you need to know to get healthy offspring and provide your fish with proper care:

  • It is recommended to feed the females with live food during pregnancy, as protein food minimizes the chance of miscarriage. Bloodworms are perfect for the expectant mother.
  • Frequent and abrupt changes in water parameters should not be allowed, this can provoke premature birth in guppies. The mortality rate among premature offspring is very high.
  • The behavior of guppies before childbirth must be monitored carefully. The danger for the expectant mother and offspring is the incurable disease plistophorosis. The fish shows lethargy, the color fades, the tail fin is lowered. The offspring produced by such a fish will be infected.
  • The female can give birth from different males, so it makes sense to pre-select the breed and bright color, depending on the desired appearance of the fry.
  • Guppies give large offspring, so you need to think in advance where the young will live. It is important that the goupes do not become uncomfortable with the cramped aquarium. Otherwise, the life of the fish will be accompanied by curvature of the spine, the inability to fully fill the need for movement and constant skirmishes with other fish.
  • The water in which the fry are kept must be clean, aeration and filtration must be done constantly. Every 1-2 weeks, about 20-40% of the water should be changed, it all depends on the degree of contamination. Good lighting and a constant water temperature also play a role in the proper maturation of the fish.
  • To prevent the fish from being sucked into the filter, the inner device is covered with nylon fabric, the outer one. with tulle. There are also foam prefilters for external filters to ensure the safety of the fry.
  • You can determine the sex of the young at 10-12 days of life. At this age, the fish grow up to 2 cm, females have a dark spot at the bottom of the abdomen, and males. white.
  • Sorting fish by sex should be as early as possible in order to prevent pregnancy among young females.
READ  How to understand that a parrot is pregnant wavy signs

Pet & Animal Care : How to Tell If a Goldfish Is Pregnant

Knowing the features, you can achieve successful fish breeding. We talk in more detail about the whole process of guppy breeding in a separate article.

How many grow

After 1-2 months, the first sexual characteristics appear. Males can be distinguished from females by their conical gonopodia and bright coloration. Males are slender with large fins, grow up to 8 cm in length, and females. up to 12. After the manifestation of sexual differences, the fry of mollies settle in different containers.

How many fry a guppy gives birth

Since the female guppy gives birth to fry quite often, up to 2000 fish can be obtained from one individual in a lifetime. The number of fry born in one birth depends on the age of the female. Young guppies give birth to 8-10 fry. From older females, 20-100 fry are obtained at a time.

What to do if the female cannot give birth

Guppies usually give birth easily, but sometimes young, old, or sick females can have difficulty. You can help the female to give birth by raising the temperature by 1-2 ° C. It should be remembered that the temperature rise should be smooth. Sharp spikes will lead to stress, which will exacerbate the situation. You can also stimulate labor by changing 20-30% of the water volume in an aquarium with a female.

Caring for a pregnant female

A pregnant female guppy needs good care. In order for pregnancy and childbirth to pass without deviations, the following recommendations should be observed:

  • A female carrying fry should be fed in a variety of ways. The diet should be complete and contain all the necessary vitamins and nutrients. It is advisable to give live food.
  • Do not change the water parameters abruptly. This leads to stress and can trigger preterm labor.
  • There is no need to disturb the female, which is carrying the fry, and transplant her to another aquarium unnecessarily. Any change of scenery is stressful for the fish, which can negatively affect the course of pregnancy. It is recommended to plant the female shortly before the onset of childbirth in order to protect future fry. If the aquarist does not have a goal to get large offspring, and also if there are many shelters and few fish in the aquarium, the female can be left to give birth in the general aquarium.

How long does a guppy pregnancy last?

Guppy pregnancy lasts an average of 21-24 days. There are cases when the duration of bearing offspring was 42 days. The following factors influence the duration of pregnancy:

  • the age of the fish;
  • her state of health;
  • stress;
  • water temperature;
  • conditions of detention;
  • feeding.

When the fish is kept in poor conditions, in the presence of stress and inadequate feeding, the gestation period increases. Diseases slow down the development of eggs, and in some cases can cause miscarriages and freezing of pregnancy. In young fish, pregnancy lasts longer than in older guppies. A slight increase in water temperature (up to 24-26 ° C) accelerates the development of eggs. Severe stress can trigger premature birth. Fry born prematurely usually do not survive.

How to tell if a goldfish is pregnant

In good conditions, goldfish become sexually mature by about a year. At the same time, as noted by N.F. Zolotnitsky, the size of the fish, as well as its age, do not really matter: “the whole difference lies only in the amount of eggs it spawns: the big one lays more eggs, the small one. less”. At the onset of puberty, as noted above, it is usually not difficult to distinguish the female from the male by the presence of small sawtooth outgrowths on the anterior rays of the pectoral fins in the latter. At the same time, the abdomen of the female with maturing eggs becomes more convex.

The male, ready for spawning, has small white tubercles (tubercles) on the gill covers that look like semolina. A “signal” for spawning can be a steady increase in temperature by several degrees, often in combination with changes in water parameters for the better (for example, a significant, more than 30%, water change in the aquarium). Often, spawning is prompted by the transportation of individuals ready for spawning and their transplantation into new conditions of detention, especially if the temperature in the new place is higher. External signs of the onset of spawning are the activity of the male, which is expressed in vigorous pursuit of the female and frequent blows with his mouth in the area of ​​her anus (thus the male encourages the female to spawn).

When such signs appear, the producers are transplanted into a separate, preferably spacious, aquarium with the temperature and water parameters identical to those in the general aquarium. It is good to place dense floating plants (Javanese moss, hornwort, nayas) in the spawning aquarium. With the course of spawning, the activity of the male increases, he tries to drive the female into a corner, limiting her movements. In the end, the male manages to “fix” the female, in this position the fish are motionless for some time. The female spawns eggs, which the male fertilizes immediately. After spawning, the whole cycle can be repeated. As a rule, the spawning rut lasts 2.3 hours, after which the fish calm down. On average, large adult fish are capable of spawning up to 3 thousand eggs during the entire spawning period, small ones are much less. Eggs of goldfish are up to 1 mm in size. initially translucent, slightly yellowish in color. Since goldfish eat their eggs, after spawning, the spawners must be removed or carefully collected and transferred to another container.

Fertilized caviar turns pale after a while, and it is already difficult to distinguish it, for example, on plant leaves. Unfertilized caviar on the second day turns white and is covered with a “fluff” of the fungus. Such eggs must be removed, and so that the fungus does not subsequently infect healthy eggs, it must be treated with a solution of methylene blue (1 ml per 50 liters of water, exposure 2.3 hours. Embryonic development lasts from 2 to 5 days, after which the larvae emerge from the eggs All this time, it is necessary to maintain a constant temperature of 22 to 25 degrees and intense lighting. The larvae are completely helpless, they look like a string with two eyes and a yolk sac, which contains a supply of food for the first three days of life. The larvae move in jerks and are able to attach to the place they touched; moreover, they are most often located in an upright position, head up.In three days, as soon as the larvae are able to reach the surface of the water and fill the swim bladder with air, the emerging fry are able to take a horizontal position and move independently and as soon as the fry begin to move independently in looking for food, they need to be fed intensively. The best food at this time is “live dust” (the smallest plankton, consisting of rotifers, ciliates, etc.). A good starting food for fry is the infusorian slipper, which is usually not difficult to remove at home. A good addition can be the smallest algae (“blooming water”).

As they grow, the diet of the fry changes. Gradually, ciliates are replaced by nematodes, young daphnia and cyclops; you can add hard-boiled egg yolk to the diet, a piece of which is wrapped in cheesecloth, dipped in an aquarium and rinsed in water. In addition to live feeds (but preferably not in place of them), the fry can be fed specialized dry feed (eg Sera Micron). By the month, the fry are able to accept small bloodworms, adult daphnia and cyclops. At first, you need to feed the fry several times a day, up to once every 3.5 hours in small portions, but so that food is constantly present in the rearing aquarium. In the future, the feeding regimen can be reduced to two times a day, but still make sure that the fry receive enough feed to avoid exhaustion and “tightening”. At the same time, care must be taken to ensure that intensive feeding does not lead to obesity. That is, there is a certain “golden mean”, for each case its own, deviation from which in one direction or another can cause further problems.

READ  Who can a cockerel fish live with?

At first, the fry are silvery in color, similar to their genetic ancestor. goldfish. But as it grows, by about 2-3 months, the color turns into the colors typical for goldfish. In some fish, the staining process may take longer. Sometimes there are quite interesting adult varieties that have a “blue” (actually silver or steel) color. It is believed that such fish simply retained the original color of the fry.

By the 15.20th day of life in the fry, the caudal fin becomes well-defined, the anal and dorsal fins begin to function. By about 25.30 days, the caudal fin in short-bodied breeds bifurcates. By that time, the fry can reach a size of 12.15 mm. A little later, by one and a half months, scales become clearly pronounced.

As the fry grow, it is necessary to sort them and reduce the stocking density in the nursery aquarium to avoid “pulling in” the fry. Sorting is carried out according to a number of criteria: by size, by standard features of the breed, by the presence of structural defects. There should be from three to five such sortings in total, starting from four weeks of age. The first step is to reject fry that have obvious structural defects and malformations (scoliosis, atavism that does not meet the standards of this particular breed, for example, an undivided tail fin in a telescope, a dorsal fin present or its “remnants” in a ranch, etc.). Next, the fry should be sorted by size, rejecting those that are clearly lagging in growth. If, as the fry grow, new deviations from the norms are found, they should also be discarded.

The fry of goldfish, especially short-bodied ones, are very whimsical and are susceptible to various diseases, in particular, those caused by opportunistic organisms (for example, bone disease). As a result, it is necessary to strictly observe the requirements of hygiene in the growing aquarium (first of all, the absence of overpopulation, the mode of aeration of the water and the regularity of cleaning the bottom from waste products).

Irina Balykova consults. consultations on cats, fish, rodents and birds

Consultation archive Ask your question

How to know if a guppy fish is pregnant

Guppies are bred at home by many breeders and aquarium fish lovers. This is a non-capricious type of fish, it takes root well in any conditions, does not require special care. A pregnant female guppy is very different from her relatives, it is impossible not to notice her. The main thing is to remove it from the general environment in time or create appropriate conditions for spawning.

Guppy species before spawning

A pregnant guppy looks a little different than before. Guppies reach puberty at 4 months, although cases have been recorded when pregnancy occurred at the age of 1 month. Finding out that a guppy is pregnant is easy. The size of her body increases, the belly takes on a convex shape. A “step” drop forms between the abdomen and the head. If you look at it from above, you cannot fail to notice the bulge of the sides. If all of the above signs are clearly noticeable, then this indicates that she is about to give birth, and she needs to be removed from the rest of the fish.

Guppy pregnancy lasts an average of 3 weeks. She gives birth early in the morning or at night.

Top signs that your fish is about to give birth.

Females give birth usually without problems. But if childbirth does not occur for a long time, then this process can be accelerated very simply. To do this, you just need to increase the temperature of the water where it is located by a few degrees.

An interesting feature of female guppies: if the temperature of the water in which they live is raised to 30, then their sexual maturity occurs a month earlier. That is, the fish is ready to give birth and gives birth at the age of three months.

Pregnancy in guppy fish

The temperature of the habitat should not exceed 26g. If the pregnant female feels any danger, then labor may be delayed indefinitely. Too high a stress threshold can lead to spontaneous miscarriage. Therefore, it is important not only to determine the pregnancy in a guppy in time, but also to create appropriate conditions for caring for her during the period of gestation:

  • Monitor the temperature of the water.
  • Change the water on time, clean it from excess feed or its residues.
  • Correct the presence and level of ammonia in the water.

Spawning tray for breeding aquarium fish.

If she gets sick, it will definitely affect the offspring. It is advisable to feed her with live food, this will protect her body, prevent deformation of the fry, and preserve the pregnancy. There is a lot of protein in live food, and it has a beneficial effect on the condition of the female and on the health of the fry.

If possible, purchase a special tray for pregnant fish. It attaches in the aquarium (inside) and serves as a secluded place for the pregnant fish, without depriving it of its familiar environment. Without creating unnecessary stress. If this is not possible, then you can divide the aquarium with a small lattice, so it will feel calm and the males will not chase the pregnant guppy.

Breeding medium and mating

These fish can be propagated both in the aquarium itself and in a special place, the so-called spawning grounds. It is not necessary to buy a special container for these purposes, and instead of it you can use an ordinary can with a capacity of 3 liters. Pour fresh, settled water, some algae into it and plant the female with the male there. Mating can be accelerated by simply raising the temperature of the water in the spawning grounds (by no more than 4 degrees) and changing a third of the water from the total amount.

Use water strictly separated, and not from the tap.

The male guppy fertilizes the female with the genital organ. gonopodia. It looks like a fin with several tubes. Only present in puberty males.

It is also easy to understand that mating has begun. If the male starts chasing the female, the process has begun. At this point, it is important to understand and consider one detail. When mating takes place in an aquarium where all the fish live, then there should not be very many males there. If so, then the female should be transplanted with one of them. Since being in a common environment, the fish runs the risk of disappearing. Males can drive her, at best, to complete exhaustion, at worst, to death.

How many fry can a guppy give birth in one birth

The number of fry born to a female depends on the age and number of births. The firstborn can give birth to up to 10 fry at once, the old one. up to a hundred or more. It has been established that the gestation period of a guppy depends on the number of fry that it bears. During pregnancy, guppies should not change their habitat. She is especially sensitive before childbirth:

  • to the quality of the living environment;
  • to temperature fluctuations, even insignificant;
  • lighting.

STIHL fish are the key to successful spawning. Therefore, it is important not only to understand that the guppy is pregnant, but also to create all the conditions for childbirth.

It is not possible to accurately calculate their number, since she can eat a huge part of the offspring personally during childbirth or after.

Courtship is a sign of readiness for the mating process in guppies. The male begins to “drive” the darling, to nestle on her side, with an anal fin. At this point, the aquarist should isolate the pair as the fertilization process has already begun. In the future, placing a pregnant female in a separate vessel can be dangerous for her and her offspring, since she becomes very sensitive to changes in the characteristics of the environment.

These unpretentious fish can breed in a small container, but the better the conditions, the more healthy and large offspring you can get. There should be enough room in the maternity hospital for 2 guppies. Experienced aquarists claim that from the moment a couple is isolated, a female’s pregnancy can be counted. It is very rare for a male to fertilize 2-4 days.

READ  What can you breed chinchillas with?

Depending on age, number of previous tags, water temperature, type of food and other characteristics, the duration of the gestation period can vary from 30 to 60 days. Normally, the period is 30 ± 5 days. A decrease or an increase in the duration of pregnancy may indicate a violation of the conditions of detention or health problems of the fish. The interval between litters can be 1-2 months.

A feature of the “live-bearer” is a time-stretched mark. A fertilized fish can “give birth” to fry in groups with a time gap between births. Sometimes another male mates with the giving birth, and in the next generation, babies from both males will appear.

View of a mature female

Guppies have strong sexual dimorphism. The male, in contrast to the female, has a more graceful constitution, elongated fins and more intensely colored. Guppies reach puberty at the age of 3-4 months. Keeping conditions have a significant impact on the fertility and maturation of fish. An increase in water temperature by 2-3 degrees leads to an acceleration of metabolism and earlier puberty of guppies.

Some experts warn that stimulation methods such as changing and increasing the temperature of the water are only needed if labor is difficult or occurs ahead of time. A decrease in temperature can significantly slow down not only the development of the reproductive system, but also lead to lethargy, decreased activity, and disease.

These cute fish are viviparous, or rather oviparous. In them, fertilization takes place inside, and the fertilized eggs also develop in the belly of the female. From a single mating, she can give several groups of fry, so it is necessary to notice the pregnancy in time and plant the female in the spawning grounds so that other fish or the parents themselves do not eat the babies.

It is necessary to observe the “courtship courtship” so that one female is not chosen by several males, which will have a bad effect on the condition of the expectant mother and the quality of the offspring. Therefore, the ideal option is a pair of guppies, which must be isolated.

Signs of pregnancy

By observing the behavior and appearance of the female, you can determine if she is pregnant. Experienced aquarists note that before the appearance of external signs of pregnancy, changes in the behavior and appetite of the female take place. 1.5 weeks before giving birth, there is a sharp increase in the appetite of the fish, so inexperienced guppy owners write off the rounded abdomen for overeating.

But if you closely monitor the condition of the female, you will notice that her tummy is increasing. Unlike an overeating fish, the belly is enlarged not only in the lower part, but also from the sides. When viewed from above, the rounded sides of the fish are visible. The closer to childbirth, the more “square” the abdomen, and in the area of ​​the anal fin a “prenatal” or spot of maturity appears. It is dark brown, yellowish-buffy, or black. Through the stretched skin of the abdomen, one can see the “graininess” of the spot, the so-called “eyes of the fry”.

A few hours before delivery, the abdomen is already so large that a noticeable hollow forms between the chest and abdomen. A bulge forms in the anal fin area. Its appearance signals that about a day remains before the appearance of the fry. It is worth noting that the degree of severity of the stage of the “square” abdomen and “prenatal spot” in some varieties of guppies is less pronounced, but the anal bulge must be present without fail.

Before giving birth, the behavior of the fish also changes. She begins to seek shelter or tries to hide among the plants. This is especially noticeable in the general aquarium. the males begin to chase the female, and she hides from them. Features are also observed in movements. the fish hangs motionless at the surface of the water or in the middle layers, it lowers its tail.

When contractions occur, muscle twitching in the anal region and tremor in the caudal fin can be noticed. Childbirth lasts from 3 to 5 hours. Sometimes the process takes up to 5-7 days. The number of fry in the tag depends on the size, age of the fish and the number of previous genera. A firstborn can give birth to 15-25 babies, and with repeated births, their number increases. A case was registered when a guppy gave birth to 180 fry in one mark.

  • environmental conditions. high temperature causes premature birth and the appearance of non-viable offspring,
  • food. live food contributes to the normal formation of fry and the maintenance of pregnancy. When feeding a pregnant female with dry food, fry may have scoliosis.,
  • the presence of one or more males. they deplete the female.

Sometimes a young and healthy female cannot give birth. To stimulate generic activity, they carry out a change of settled fresh water, raise the temperature to 28-30 ° C or plant it before the spawning of a young male.

How to know if a guppy fish is pregnant

Guppies are beautiful freshwater fish. It is unlikely that you can find another fish of the same type, which for several decades would have retained the commitment of novice and experienced aquarists. The phenomenon is explained not only by the simplicity of the content, unpretentiousness in nutrition, but also by the huge variety of colors, fin shapes, interesting breeding features.

Fertilization process

Spermatozoa are introduced into the female genital opening using a gonopodium. The formation of the copulation organ begins at puberty. Prior to this, there are no differences in the structure of the anal fin between the female and the male. With the onset of puberty, the rays in the cross section resemble a triangle, and later. a tube.

The tube, which is supplied with muscle fibers, is raised or lowered, which facilitates the introduction of spermatophores into the body of the female. “packets” of spermatozoa. They are partially spent on the fertilization of a part of the eggs, and some of the seed material remains inside the female’s reproductive organs for several months. In guppies, as a result of one insemination, from 5-6 to 11 marks often occur.

When the female is fully ready to mate, she releases a special secret into the environment that attracts males to her. They also have a chemical effect on the mating behavior of females. Copulin secreted by the male sex glands forces the female to take a position that is most convenient for the introduction of gonopodia into the genital opening. Swimming of a female in an inclined position is another sign of her readiness for copulation.

But such chemical markers of readiness to reproduce do not replace physical stimulation. The male begins a mating dance around the female, spreading his fins and sparkling with a bright body color, he quickly rushes around the chosen one. Several males can “chase” a female at once.

Interestingly, each male has his own dance, which he repeats in great detail with each mating. This mating ritual is embedded in the genetic memory of males. If he does not “look after”, then the female will not let the male come to her, despite the chemical marks.

Also, the female chooses the “gentleman” according to the brightness of the color and the length of the fins. The males with red color or red spots and long fins are the winners. They grow in males throughout life and testify to longevity and good health. These qualities are desirable in offspring. Thus, in the appearance of the male, information about his solvency as the father of numerous offspring is “encoded”.

Fry and doe care

After the fry appears in the female, it must be deposited or the fry must be placed in a container for growing. The fry are active and immediately begin to seek shelter. Their survival depends on this, since the guppy’s parental instinct is completely absent. The female perceives large fry as prey. Therefore, pebbles, artificial or live plants are placed at the bottom of the spawning grounds. everything that kids can use as a shelter.

How to Know if a Goldfish is Pregnant ( Easy Tips )

An interesting feature of guppies is that they have hermaphrodites. individuals in which the genitals of both sexes are developed. In such fish, self-fertilization is possible. In addition, there is a spontaneous transformation of a female, even one that has already spawned, into a male. Much less often, the male turns into a female.

Guppies are interesting breeding. In a short period, they can give several groups of fry, which is very convenient for breeding. To get healthy breed offspring, you need to know all the subtleties of the reproduction of these amazing fish.