Guppies (Poecilia reticulata) are a fascinating fish breed. This freshwater tropical fish originates in South America.

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The average selection of fry per birth is from 30 to 60

As we shelp, guppies are very productive fish and also have the right to breed as soon as they are as young as one month old!

Guppies’ sex creates at four weeks. At six weeks, they are sexually active. The average age for first breeding is between three to five months.

Chances are if you have a male and also female guppy in your tank, you have actually a pregnant female!


Pregnant female guppy (source)

Knowing which fish are male and which are female is essential.

Look under your guppy’s tail, toward the ago component of the stomach, and also near the anal fin for a dark spot, also recognized as the gravid patch. These fish are your females.

Keep the males and also females separate until you are all set to breed them to preserve population control.

A female guppy deserve to keep sperm from one insemicountry for up to a year and deserve to come to be pregnant up to eight times from that single event!

In truth, a female guppy deserve to end up being pregnant aacquire a mere few hours after having simply provided birth!

While the average variety of fry per birth is 30 to 60, your female can give birth to as many type of as 200 fry from one pregnancy.

Guppy Breeding Behavior

Guppies’ female at the bottom and also male (source)

The male guppy will certainly chase the female about the tank. When he is close sufficient, he will certainly conveniently extfinish his gonopodium, a long, narrow adaptation to the anal fin.

He will certainly pass a sperm packet to the female’s anal vent, situated just behind the gravid spot.

Mating is quick and also might occur multiple times to ensure insemicountry.

You might mistake the quick activity as aggression at first, however once you are acquainted through it, you will certainly identify it as mating behavior.

Guppy Gestation Period

The gestation duration for female guppies is commonly less than one month but can variety from 21 to 31 days.

Once you notification that your female guppy is pregnant, remove her from the community tank to a separate breeding tank.

Identifying Your Pregnant Guppy

Boxy-shaped female (source)

To recognize whether your female guppy is pregnant, look for changes in the gravid spot. It will certainly end up being darker and larger as the babies thrive.

Your guppy will thrive in girth significantly and may appear “boxy” shaped. Her shade might fade.

Once she is sensibly close to giving birth, her gravid spot will appear black. You might even have the ability to view the eyes of the fry through your female’s belly wall.


Other indications that your female is well along in her pregnancy are transforms in her behavior.

You might notice your female guppy is not as active, tfinishing to remain in one area. She may also end up being shy or more aggressive.

She might eat everything in sight or beside nothing. When it is cshed to her time to provide birth, she may look like she is pushing and may have actually an arch to her back.

She might additionally have actually obstacle swimming and also might breathe promptly.

Maintaining the Tank


In the finest exercise, erected 2 tanks: one for the fry to be born in and also an additional to let mother recoup in for one to 2 days prior to you return her to the community tank.

A ten-gallon tank is a great dimension for your breeding tank.

Water Parameters

Maintain the water pH range in between 7.0 and 7.6 and clean the tanks on a regular basis.

You desire to regulate any algae or waste buildup that can impact the wellness of your fish. Change 25% of the water eextremely week.

Install a sponge filter to store the water clean. The water hardness should be from 7 to 12 dGH.

Raise the water temperature in the tank to between 77 and 79°F (25 to 26°C) to encourage a natural gestation progression and also aid the birth along.

Take care to monitor the water temperature, as fluctuations can stress and anxiety your female and influence the possibilities of a successful birth.


The guppy fry require from 8 to 12 hours of light per day for healthy advancement. Use a tool tank light, LED, or ambient room lighting.

Setting the light on a timer will certainly aid store a continual schedule. Adding a dimmer have the right to simulate sunclimb and sunset conditions to lessen the anxiety to your fish.

Keep the Fry Separate

Keeping the fry sepaprice from the neighborhood tank and the mother is vital, as the mature fish might eat the fry.

While a separate tank is simplest, tright here are mesh pieces you deserve to purchase to hang either in the birpoint tank or neighborhood tank to save the fry safe. Mesh net boxes are additionally an option.

In addition, having actually some dense, planted areas will give the fry places to hide. Both artificial and also organic aquarium plants will serve this function.

Feeding Your Pregnant Guppy


The further along your guppy is in her pregnancy, the less she will certainly most likely eat. Give her numerous tiny meals each day, and also then simply a little little.

You perform not want leftover fish food floating around, so she must be able to end up what you offer her in five minutes.

Nutrition is essential for a healthy mommy and also babies. In addition to a great high quality flake food, think about supplementing via the following live or frozen foods:

Brine shrimp (fresh or frozen) Spirulina flakes Mosquito larvae Daphnia Vegetables, such as lettuce, peas, or zucchini

The Actual Birth

A typical birth deserve to take everywhere from two to 6 hours. Occasionally, the process have the right to start and also speak or deserve to extfinish over a longer duration. In these instances, the fry might not be viable.

If the birpoint procedure has quit, return the female to the neighborhood tank for a day or so as isolation will stress and anxiety your fish.

When they are born, the guppy fry are curled into little balls. Healthy fry will uncurl and also start swimming easily.

If you observe any type of unhealthy and balanced or stillborn fry sinking to the bottom, rerelocate them from the tank as soon as possible.

After Your Guppy Gives Birth

One week old fry (source)

After your female provides birth, sepaprice her from the fry, either through the use of a mesh or another tank. This is important as she may eat the fry, seeking the nourishment she needs to recoup.

Isolate her for one to two days. Throughout this time, feed her well and frequently.

An array of high-top quality, high-nutrient foods will certainly enable her to regain nutrients lost in the birpoint process.

Do not sepaprice her for much longer than this time as the isolation deserve to additionally stress your fish.

After returning her to the community tank, remember that a female deserve to come to be pregnant multiple times from a single insemicountry. Keep an eye on her because she might be ready to provide birth again in one more 21 to 31 days.

Fry Care and Feeding

Your newborn fry will require incredibly small-sized food at first. Feed them regularly, as much as 5 times a day.

Excellent foods to feed your fry include:

Pulverized flakes Baby brine shrimp

Guppy adults are from 0.6 to 2.4 inches in length. The fry are around ¼ in length as soon as they are born and also grow about 0.3 inches per month.

Keep the fry sepaprice until they are about one-half inch in size. Then you have the right to introduce them to the community tank.

Final Thoughts

Knowing a small about guppy biology and also refertile actions will certainly go a long method toward maintaining your fish happy and also healthy and balanced.

If you plan on sindicate keeping guppies for their look, then take into consideration maintaining a team of males only.

You will enjoy the beautiful coloration of the males and not have to problem about any type of guppy fry.

If you perform plan on breeding them, learn how to care for your pregnant female guppy throughout her pregnancy correctly.

Preparing a separate tank or area for the fry to be born will certainly protect them.

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Feeding the fry a mix of nutrient-well-off foodstuffs and keeping water high quality and problems will aid encertain that your fry reach maturity and can be presented right into the neighborhood tank.