Did you just get your hands on some guppy fry? Or maybe you already have guppies and they just decided to spawn and have children. Now you might be wondering how long it takes for guppies to grow and how big they will get.
So, how long does it take for baby guppies to grow? Generally speaking, you can count on a guppy being born at around ¼ inch in length and grow to around 2 inches in length at the most. It takes about 6 months for a baby guppy to grow from ¼ inch to 2 inches, so they grow at a rate of roughly 0.3 inches per month.
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Guppy Fish Size, Growth Rate, & Growth Stages
Your average male guppy is going to grow to be around 2 inches in length at the very most. Once the guppy reaches this size, growth will stop. They are not very large fish.
Guppy fish, the fry, are born at about ¼ inch in length, so in terms of the growth rate, the calculation is pretty simply. It takes a guppy about 6 months to reach its adult size of 2 inches, so you can divide those 2 inches by 6 months.
Realistically, a guppy will grow by about 0.3 inches per month, give or take, so they do grow fairly slowly. There are various stages of guppy growth, which we are going to cover right now.
Guppies are livebearers, which means that they give birth to live fish, not to eggs. The guppy fry is born at roughly ¼ inch in length.
They look a little deformed for the first few hours, but will quickly gain their natural shape, and they start swimming as soon as they are born.
Until the guppy is about 2 months of age, it remains in the juvenile state. This is a really important stage where a lot of the growth takes place, and it is important to provide them with adequate food and living conditions during this stage.
At the end of the first 3 months, the guppy should be around ¾ inches in length.
3. Young Guppy
The next 4 months of the guppy’s life is the young guppy stage. This is when guppies should be sexually mature, and this is where the rest of their growth will occur, from ¾ inches to 2 inches in length.
4. Adult Guppy
Within 6 months of the guppy being born, it should be fully sexually mature and about 2 inches in length. You can expect a guppy to live for about 2 years from the day it is born.
- Don’t forget to get some good live plants for your guppies, we have covered some good options here.
How Often Do Guppies Have Babies?
What is pretty insane about guppies, especially the females, is that they can give birth to a whole lot of live fry at once, and they can give birth very often too.
Under the right aquarium and breeding conditions, a female guppy can give birth to a new batch of fry every 30 days, and each time she does, she can give birth to between 20 and 50 guppy fry.
So, if you have males and females in your tank, you can expect new baby guppies to appear roughly once per month.
Do Guppies Eat Their Own Babies?
Yes, this is a problem with guppies, especially the males. The male guppies will eat their own babies, and a whole lot of them too.
Now, do not be scared or disgusted, because this is the norm with many different types of fish out there. For one reason or another, fish, including guppies, often eat their own fry.
Now, this is more common with male guppies than females, but it does still happen with females.
This is why when you are breeding guppies, it is recommended that your remove the male and female parents from the breeding tank so that the guppy fry does not end up getting eaten by the parents. (breeding traps work well too, more on those here).
How Long Do Guppies Take To Mature?
As we discussed up above in the first section of today’s article, from the day that a guppy is born to when it is a mature adult, including all 4 growth stages, it will take roughly 6 months for a guppy fry to totally mature into an adult guppy.
Seeing as a guppy only lives for 1.5 to 2 years, this can be considered a long time to mature, because if the guppy only lives for 1.5 years, it will have spent a full third of its life simply growing into maturity.
Of course, this growth process can be hastened if you treat the guppies right and provide them with adequate food and living conditions.
How To Make Guppy Fry Grow Faster?
Now, in terms of guppy growth rate, there is only so much you can do in order to make them grow faster from fry to adult. The growth rate is pretty set in stone, but there are a few things that you can do in order to make guppy fry grow faster, plus to make them as healthy and strong as possible.
Do Guppies Die After Giving Birth?
No, this is a myth and it is not true. Guppies do not die after giving birth. Once a female guppy is fully sexually mature, at about 6 months of age, she can continue pumping out up to 50 baby guppies every 30 days until she reaches old age, at 1.5 or 2 years of age, and dies.
- SEE ALSO: The Best Breeding Traps for Guppies
General Guppy Breeding Tips
Breeding guppies is really not all that hard at all. Here are some general guppy breeding tips and practices for you to follow for the best breeding results.
When it comes to breeding guppies, as you can see, the whole process is quite easy and straightforward. Once the guppies are born at ¼ inch in length, you can expect them to grow around 0.3 inches per month, for 6 months, until they reach maturity and their full adult size of 2 inches.
Image credit: panpilai paipa, Shutterstock