Pregnant Guppies – How To Tell If Guppies are Pregnant?

Is your guppy looking a little puffy lately? Have you recently had the thought that it may be pregnant? Well, there’s always the possibility.

Most home aquariums have guppies because they are easy to care for and entertaining to watch. One pregnant guppy fish, on the other hand, may soon overcrowd a tank, earning the moniker “The Million Fish.”

Pregnant Guppies

So we’ve written out all detail relevant to the pregnant guppy fish down below. how to look after them, and most crucially, how to tell whether they’re expecting. Continue reading to find out more.

How to Determine Whether a Guppy is Pregnant?

The fastest way to tell whether a guppy is pregnant is to look for a black spot under her tail toward the underside of her stomach. The black area on the guppy is known as a gravid patch, and as the babies grow, the gravid patch on the guppy will deepen and expand in size. In the last stages of pregnancy, this patch may become black, and the guppy may appear swollen or fat.

Other Pregnancy Indicators Include

  • The color of the fish will fade with time.
  • The gills will only be partially open.
  • The fish’s back will be arched, and it will look like it is pushing.
  • The feeding patterns of the fish will shift, with the fish either eating voraciously or not at all.
  • The fish will congregate in one area of the aquarium, usually near the heater.
  • The fish may grow more aggressive or timid as a result of your actions.
  • The gut of the fish may appear to be virtually square.

You Can See Her Mating

This is one of the most evident signals that your guppy is in the process of reproducing. When you become aware that the crime is being committed. Before mating, the male will most likely chase the female around the tank. Once he’s close enough, he’ll erect his anal fin, which will go into the female’s underbelly and fertilize her. If you don’t see this, don’t worry. It may happen quickly, and the majority of fish owners are utterly ignorant of it.

guppy Mating

Related Post: How To Help a Pregnant Guppy Not Giving Birth?

Males are Present in the Tank

When there are males in the tank, this is certainly another sign that your guppy is pregnant. Guppies are livebearers who give birth every 30 days on average. If you have guys in your tank, they’ve most likely already impregnated your guppy. It doesn’t imply your guppy isn’t pregnant just because there aren’t any guys in the tank. It’s possible she became pregnant before you purchased her.

Males are Present in the guppy Tank

Changes in their Gravid Spot

The gravid spot is found near your guppy’s butt, and it serves as a pregnancy sign. It should look darker around the two-week mark. Make sure you keep an eye on your guppy’s gravid region at all times. It’s another indicator that your guppy is pregnant if you observe it starting to change color. The guppy fry may grow so developed near the end of pregnancy that you can detect small dots in the gravid region that are the fry themselves. The gravid spot will not entirely vanish after giving birth; however, it will fade and perhaps shrink.

Changes in their Gravid Spot

Their Stomach will Start to Ewell

Your guppy’s tummy will begin to expand as the fry in their stomach grow. This shouldn’t happen all at once but over the course of a few weeks. However, just because your guppy’s tummy is protruding doesn’t indicate they’re expecting a baby. In rare situations, it might be an indication of bloating, constipation, swim bladder illness, or even dropsy.

In-Place Swimming

Another telltale indicator that your guppy is going to give birth is if she appears to be swimming in place. While her body may appear to be moving, the fish will remain still. She should be in a secure and comfortable place by now because labor is about to begin.

They’ll get more Aggressive as a Result of This

When your female is pregnant, you may find that she gets more hostile, especially toward males that continue to try to mate with her. This may take the form of chasing them, but in more serious situations, they may start fin nipping.

Rapid Breathing

When your guppy is pregnant, you may notice that their breathing becomes more rapid as well. As they go farther along in the pregnancy, this is more likely to happen.

Taking Care of a Guppy that is Pregnant

The phases of guppy pregnancy move swiftly since the gestation period is usually shorter than a month. Your pregnant guppy needs special attention.

Pregnant Guppies


A pregnant guppy needs adequate nutrients to keep herself and her growing fry alive. Due to the amount of space the fries take up, she can’t consume very much at once. So, to avoid overloading her, feed her three to five little meals throughout the day. Just a little pinch would be enough, as there won’t be much remaining food to dirty the tank. Offer her live or frozen brine shrimp, along with a high-quality flake meal, some spirulina flakes, and even freeze-dried blood worms, on a daily basis. Variety is beneficial to excellent nutrition.

Feeding Pellets to Guppies

Time for Delivery

In order to give birth to her fry, a pregnant guppy should be withdrawn from the communal tank or secluded in a section of it. Actually, two separate tanks should be prepared: one for the fry when they are born, and another for the mom to rest for a few days after delivery before returning to the communal tank. The fry will not be eaten by their mother or the other fish in the community aquarium if they are kept in their own tank, and it will be easier to care for them during their first few weeks of development. As soon as you discover one of your guppies is pregnant, act quickly and start preparing for the delivery.

Time for guppy Delivery

Return the mother to the communal tank if you are expecting a delivery and it does not happen within 24 hours of her being isolated. If a pregnant fish is kept in isolation for more than two days, the fry’s development may be hampered. If you put the fish back in the tank, try raising the temperature a little to assist the fry mature, and then keep an eye out for signals that she’s about to give birth. If this is the case, gently return her to the isolation tank. Return the water temperature to normal when she delivers delivery. Seeing a live delivery on video will give you a better idea of what to anticipate.

Isolate after Delivery

After the delivery, place her in isolation for at least 24 to 48 hours to allow her to recuperate. It’s also crucial to feed her healthily during this time since she’ll be ravenous after giving birth.

Guppies Having Babies: Average Delivery Time

In most cases, the guppy delivery process takes between two and six hours, but it can take up to 12 hours if the mother is having problems delivering all of the fries. In other circumstances, the mother will birth a few fries before stopping and restarting delivery in a few days.

Taking Care of the Fry

It is vital to feed the fry frequently after they are hatched. Many experts think that feeding them up to five times a day is a good idea because the first four weeks of their lives are when they gain the most. When the fry is well-nourished, they grow into healthier, more resilient fish. The fry requires very minimal amounts of nourishment due to its size. Pulverized flakes and newly hatched brine shrimp are examples of this.

Guppy Fry Grow Faster

Control of the Guppy Population

Keep in mind that the guppy fry determines their gender at four weeks and becomes sexually active at six weeks, so it’s crucial to keep the males and females separated between these two stages to avoid breeding.

Male-To-Female Ratio is Insufficient

You’ll have to take each fry out of the tank separately and place it in a transparent container to identify the males from the females. If the fish has a gravid spot, examine it with a magnifying glass and place it in the female aquarium. The fry will eventually grow, and you will be able to sell or give them away.

The (Guppy) Life Miracle

Guppies take some attention to maintain their health, and a pregnant guppy necessitates a little additional attention to ensure that she and her fry survive the pregnancy, delivery, and beyond. You’ll be off to a terrific start if you follow the care instructions indicated below.

You can read guppy related article: Do Guppies Sleep? Everything To Know!

What is the Maximum Number of Babies You Can Expect?

The number of children you will have is determined by a variety of variables. Guppies that are pregnant can have anything from 10 to 50 baby fish. The actual number will be determined by genetics, food availability, the mother’s health, and a little luck. Age is also a crucial issue. Younger fish that are giving birth for the first time have fewer offspring initially. The fry is usually smaller and weaker.

What Is the Maximum Number of Babies You Can Expect

The female guppy fish normally has more and more kids with each pregnancy as she grows older and continues to mate. There are currently no assurances about the survival rate. Some newborns will undoubtedly die soon after delivery. Getting a 100 percent survival rate is unusual, whether it’s due to being eaten by other fish or natural causes. Some babies may even be stillborn as a result of the procedure. Again, the mother’s age has a significant role. Pregnancies in older fish with more experience are smoother than those in younger fish.

Before Giving Birth, Guppy Behavior (What are the Pregnant Guppy Signs Of Delivery)

There will be more signals before your guppy gives birth or goes into labor, in addition to the ones listed above. If you see the following indicators, it’s likely that a large number of guppy fries are on the way.

Contractions of the Body

If you observe your guppy having body contractions, it’s one of the most obvious signs that she’s ready to give birth and is now in labor. You can detect body contractions by keeping an eye on her body. She’s having them if her muscles are clenching and then releasing again. It’s crucial to remember, though, that this might carry on for quite some time until she delivers birth.

They’ll try to Conceal Themselves

When your guppy is about to give birth, it will try to hide from the other fish in the tank. As a result, you might not be able to detect them as readily once the contractions start. They do this to avoid other fish in the aquarium agitating them and acting violently while they are unable to protect themselves. This is why, when they’re pregnant, it’s a good idea to relocate them to a different tank or somewhere safe. You may see your guppy attempting to isolate herself from the other fish in addition to hiding. She prefers to stay near the heater since it’s warmer, but any corner of a safe location in the tank would suffice.

Her Body Will Get More Angular as Time Goes By

As she approaches the end of her pregnancy, you’ll note that her tummy is becoming more angular rather than round. When you observe this, you may be confident that she is on the verge of giving delivery.

Eater’s Reluctance

You may also notice that your female no longer wants to eat as the pregnancy progresses. She may refuse to eat or spit it out after only a few bites. Either way, she’s on the verge of delivering her fry.

Frequently Asked Questions

Is she Unwell?

Last but not least, make sure your girl isn’t unwell. There are a variety of reasons why your guppies’ abdomen may be swollen. And they aren’t all caused by pregnancy. For example, if your guppy becomes chronically constipated, her tummy may inflate. In addition, dropsy causes bloating in the stomach. It’s also possible that you have swim bladder disease. To determine whether or not your guppy is pregnant, look for signs of pregnancy and be aware of diseases that might produce a swollen stomach.

Is the Gravid Spot Visible?

Another technique to figure it out is to look for a gravid spot. If your guppy has a gravid spot, this is the most obvious evidence that she is pregnant rather than obese. So, if you discover her gravid patch, start preparing your tank for fry.

Is Your Guppy Fat or Pregnant?

Whether your guppy appears to be larger than usual, it’s always a good idea to check whether she’s pregnant or if it’s anything else. Fortunately, there are a few options for determining what it is.

Is there a Male in the Tank?

First and foremost. Do you have any males in the tank? There’s a strong probability you’re dealing with a pregnancy if there is. However, just because there aren’t any guys in the tank doesn’t mean she isn’t expecting them. She may have been pregnant at the time you bought her, or she could have had some sperm saved in her. Sperm can be held for months, waiting for the right moment to fertilize.

The Bottom Line on Pregnant Guppies

As you can see, there are several simple techniques to determine whether or not a guppy is pregnant. You should have no problems after reading this guide. Remember, if she’s pregnant, you should try to relocate her to a location where she may be alone and unafraid.

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