How Many Guppies Can I Have Per Litre(s)?

By Nadine Oraby | 2020 Update

Guppies are very famous fish that attract everyone because of their vibrant colors. They are also sold at very handy prices in pet stores. They are very hardy and lively, small and interesting.

How Many Guppies Can I Have Per Litre(s)? Bear in mind that any fish tank will never be filled with water from top to bottom.  40 liters is enough for about 10 or 12 guppies. You need to make sure that the tank is not small because guppies hate small tanks that restrict their swimming patterns.

How Many Guppies Could A 10 Gallon Aquarium Sustain? (Video)

This is a frequent question that highlights people’s interest in this interesting species. You can never get bored of guppies. And here’s why!

Guppies for beginners!

Guppies would be an excellent choice for beginner fish owners who still lack the experience of keeping pet fish. Guppies are easy to keep and easy to take care of.

The requirements to keep them healthy are not too complicated for beginners to learn about. Not only that, children are always encouraged to keep guppies as well!

This proves that guppies are simple creatures that even children could take care of. Guppies are easily bred and it seems like no one exerts too much effort to keep them. But this does not deny the fact that once guppies are sick; this could lead to serious repercussions.

Do not neglect guppies just because they are hardy! You need to always take care of the water and the warning signs that might indicate an infection.

How do I tell a male from a female guppy?

It is not a difficult task at all to distinguish between a male and a female guppy. Females will look larger than males and they would look curvier or rounder.

Females are not so colorful like males. They look duller and grey to some extent. However, males have vibrant colors and they also have beautiful fins that are so wide.

By the way, guppies, in general, do not look the same. You will never find two guppies that are identical. There must be some sort of difference in their features.

How to feed guppies

Guppies are hungry eaters…we mentioned previously that in the tank, they would be begging for food even after they are fed and their bellies are stuffed with enough food. It is just their way of functioning.

It is no problem at all feeding guppies. Let us first know what they feed on in their natural habitat: they feed on insects’ larvae and worms too.

When you take them back home, do not be confused because there is a lot you can feed them. make sure that the food is in flakes and small particles. You can feed them:

  • Flakes
  • Lettuce
  • Bloodworms
  • Spinach
  • Mosquito larvae
  • Spirulina
  • Frozen and dried food

Just because guppies are open to eating anything, this does not mean that you can give them low quality food. Remember that they can get infected easily and become sick. You never want to see your guppies dying, right?

One more thing that is important to know: feed them once or twice only daily because they have very small stomachs and overfeeding them could lead to health problems. It is quite interesting to watch guppies eating larvae…they look like they are eating spaghetti!

There is something else you should pay attention to….if there are eggs or young fishes in the tank, they could be devoured! Yes guppies are peaceful and eating the eggs or the fry do not mean they are aggressive, it is just their nature.

Now let me tell you a surprising advice: you are encouraged to starve your guppies once per week…this will help their digestive system to function better.  This short break from food would also help in lengthening the fishes’ lifespan! This is general information and not only restricted to guppies!

Tank mates

Guppies are peaceful fishes that make good communities in a fish tank filled with different fish types. However, in order to guarantee a perfect fish tank without any chance or risk of aggression and attacks among the fish, place the guppies with small peaceful fishes too like: Platies, Mollies, Catfish, Neon Tetras, Angelfish, Corydoras, Peaceful Pleco’s and Ram Cichlids.

Now with these types and a big number of fishes, you, of course, need to bring a big enough tank and enough water for the fishes to feel comfortable in. 20 Litres will never be enough as the tank one way or another cannot be filled completely with water from top to bottom.

So, 40 litres (10.56 gallons) would be suitable for 12 guppies and it would give room for other fish species to join the guppies. Guppies are sociable and they hate being kept alone. So this would give you a very good opportunity to bring more fish to your tank.

It would be such a fancy tank indeed! Beware of these fishes because they can never get along with guppies: Gouramis, Paradise fish, Siamese fighting fish, Acara’s,  Jack Dempsey Cichlids, Texas Cichlid.

Guppies are fin nippers and placing them with fishes that have attractive fins would be a disaster because guppies will keep nipping at their fins. Guppies are very tricky and playful, they like chasing other fishes that can strike back. But this is not an example of aggression; it is a normal innate behavior that you do not need to worry about at all.

Related questions 

How many fry does a guppy have? The female guppy could take few hours to finally drop all of the fry.  Each drop could consist of 2 or even 200 fry! Yet the average female guppy gives birth to 30 or 60 guppies only.

How many guppies can I have in a 10-gallon tank? This tank size could fit around two male guppies in addition to 4 more female guppies.  But 10 gallons of water would make a good room for 10 or 15 guppies to swim freely and share the same tank.


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