Cardinal tetra Care guide – Size, Life Span, Tank Mates, Breeding

cardinal tetra

Welcome to our website about the Cardinal Tetra fish, where you can find all the information you need to enjoy this variety of fish to the fullest.

Care Level:Easy
Temperament:Peaceful
Color Form:Blue and Red
Lifespan:Up to 5 years
Size:Up to 2″
Diet:Omnivore
Family:Characidae
Minimum Tank Size:20 Gallons
Tank Set-Up:Tropical freshwater with open swimming space
Compatible:Peaceful community

Characteristics of the Cardinal Tetra fish

The Cardinal Tetra fish is really very beautiful, and above all, it is a fish that decorates the aquarium very well, since it will give it vitality. Of course, it must be said that to get these fish to attract attention in your aquarium, you will have to have them in large schools of fish, which will make your aquarium really very beautiful.

You have to know that Cardinal Tetra fish stand out for having an elongated body, remembering that they are small fish. That is to say that as a general rule, they do not usually grow more than 6 cm. Hence we recommend having many copies to make them stand out in your aquarium.

On the other hand, you should know that females stand out for being larger than males and especially stand out for having a more bulky belly.

Finally, we have to emphasize that this fish stands out for having a really beautiful colour. This means that it has a bluish-green band, another red line that is located in the lower part of the fish. The rest stands out for being of a silver colour, without forgetting that the fins are transparent.

What are the advantages of having this fish?

This variety of fish stands out for having a  fast and beautiful movement. This means that if you have them in large numbers, you can enjoy a really beautiful aquarium.

In addition, it is a type of fish that is not very complicated to take care of, as you can see on our website, so today it is a type of fish in high demand, both in beginner and medium level aquariums.

Finally, we have to add that we are talking about a not very aggressive species, so it will be able to coexist without problems with other species that need the same type of water and especially those that are the same size as the Cardinal Tetra fish.

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Cardinal Tetra fish breeding

If you have Cardinal Tetra fish and want to reproduce them, you have to know that this task is not easy, but you will surely succeed with a little effort. Of course, before promoting the breeding of this fish, it is important to see what you are going to do later with them since they will not all enter the aquarium.

Data to take into account before raising it

First, you have to know that the female is larger than the male, while she has a larger belly, so it is not difficult to differentiate between the two sexes. For this reason, when going to the aquarium to buy fish, it is important to request that they give you both males and females, in order to be successful in future breeding.

On the other hand, you should know that the breeding will take place between the months of April and October, so if you want to reproduce this species of fish, what you should do is use all possible means during these months to try to achieve success in the breeding.

How to be successful in the reproduction of the Cardinal Tetra fish?

To begin, you have to keep in mind that this task is not easy, but it is not impossible either, so if you try, you will surely succeed.

First of all, it is very important that you are clear that it is important to separate the different pairs of fish two by two. That is, you will have to put a male and a female in an aquarium of about 10 litres. At the bottom of this aquarium, you will have to put a net, to prevent the parents from reaching the eggs and therefore eating them.

Normally, once the female Cardinal Tetra fish has laid her eggs, you will have to put the Cardinal Tetra fish back in the aquarium.

As for the eggs, you will have to leave them in the aquarium for at least 24 hours, at which point the eggs will hatch. Of course, when the young are born, you should not put them in the aquarium, but you will have to wait for them to grow to put them in, in order to prevent them from being eaten by the adults.

The behaviour of the Cardinal Tetra fish

If you want to know everything about the Cardinal Tetra fish’s behaviour, we invite you to continue reading, as we are going to show you all the information you need to know about this fish.

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Interesting behavioural facts

We have to say that they stand out for being really calm fish. This means that you can join them with other calm fish of the same size since at least this species will not mess with the rest of the fish.

It is also a fish that appreciates being in a group, which means that we recommend making groups equal to or greater than ten members. And is that if you have them individually or in small groups, they will feel very alone and little protected. Also, if you have them in groups, you can enjoy a much more beautiful aquarium.

Finally, we have to add that the dominant fish will be inside the group in large groups, while the weakest will be outside, which is really very curious to see.

How is the Cardinal Tetra fish in the aquarium?

Cardinal Tetra fish is a very good option. This is because its behaviour at all times will be calm, so you will not have problems living with other species.

In addition, it is a species that likes to swim in groups. Hence we recommend that you always keep this species of fish in large aquariums. In this way, the Cardinal Tetra fish will feel much more comfortable and will show off a much more attractive colour.

Therefore, we recommend that when you go to the store to buy this variety of fish, you should always buy the members that are closer together, since this means that they are in better health. That is, you should never buy the fish that are separated from the group since this will be synonymous with weakness or disease in the fish.

Finally, we have to say that it is a species that will swim throughout the aquarium, although they tend to be mainly in the middle of it.

Aquariums for Cardinal Tetra fish

If you want to enjoy the beauty of this view, we invite you to continue reading, as we are going to show you the type of aquarium you have to have to achieve the happiness of your fish.

What aquarium to buy for Cardinal Tetra fish?

Although we are talking about a really small fish, you should know that it is a fish that needs a lot of space to swim. This means that if you want your Cardinal Tetra fish to live happily, what you should do is provide a large aquarium.

For this reason, we do not recommend putting this type of fish in aquariums smaller than 60 litres, but since it can be, we recommend putting the Cardinal tetra fish in aquariums greater than 100 litres. So they can enjoy the space that this variety needs.

In addition, it is also very important to put good decoration, thinking about this variety of fish. By this, we mean that we recommend putting decoration that allows your fish to hide when they feel scared.

Finally, we also have to add that it is a fish that appreciates aquariums that are not very illuminated, especially at the bottom, since it is used to being in waters with little light.

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What water to use in an aquarium that has a Cardinal Tetra fish?

As we have said, this type of fish appreciates having volumes of water greater than 100 litres.

On the other hand, the water temperature should be between 22 degrees and 28 degrees. If the temperatures are lower or higher, the fish will suffer and therefore can become ill.

On the other hand, the water will have to have between 6 and 7.5 Ph and 5 to 15º Dgh of hardness, since outside these levels, the fish will suffer a lot.

Finally, we recommend you have a large number of plants in your aquarium, in order to make your fish feel as comfortable as possible. In this case, we recommend you bet on natural plant models, although you can also put artificial plants. The important thing is to make the Tetra Cardinal fish feel as comfortable as possible in your aquarium.

Cardinal Tetra fish feeding

You can feed the Cardinal tetra fish with live food as prepared, so we are going to show you that you have to feed it, with the aim of having specimens with striking colours.

What does Cardinal Tetra fish eat?

You can eat live food without any problem, as long as it adapts to its size of course.

This means that you can feed this type of fish when it is an adult with worms, brine shrimp or, for example, mosquito larvae. They like this type of diet a lot because they will feel at home, which makes many people use this type of diet with the aim of giving the best possible life to their fish.

But if you don’t have time to go shopping or look for live food for your fish, you have to know that food prepared for this type of fish is already sold in aquariums. Of course, if you bet on this type of food, you always have to give rations adapted to the number of fish you have in the aquarium since excessive feeding can kill them. Not forgetting that this food must be special for this type of fish, that is, you will have to buy food for hot water fish.

In this way, you can see that it is a very easy fish to feed since it will eat almost everything, it will even eat vegetables if it is cut into small pieces, although it is not the most recommended.

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What do baby cardinal tetra fish eat?

If you have been lucky and have managed to reproduce this species of fish, you have to know that Tetra Cardinal fish when they are young cannot feed in the same way as larger ones.

For this reason, we recommend feeding them crustacean larvae or brine shrimp. When the fish grow a little, you can give them well-chopped prepared food so that it can enter their mouths.

Caring for Cardinal Tetra fish is not too complicated, but you must always bear in mind that this type of fish is hot water, so we recommend using the following tips to enjoy this type of fish.

Tips for caring for Cardinal Tetra fish

First, it must be said that this type of fish likes to swim a lot, which is why it is recommended to have an aquarium of at least 40 litres. But the bigger, the better, because this way the fish can have much more space and enjoy a much healthier life.

On the other hand, it is important that the aquarium is not very illuminated, especially in the lower part.

Caring for Cardinal tetra fish

In addition, you should not forget that Cardinal Tetra fish want temperatures that do not drop below 24º and that do not rise above 28º. And is that, if the temperatures are not between the degrees mentioned, the fish will suffer a lot and may suffer diseases. To this must be added that this type of fish appreciates enjoying soft waters.

Main care of the Cardinal Tetra fish

This type of fish will keep on its own, as long as you give it adequate food, provide it with adequate water and especially when it has enough space to swim without problems.

On the other hand, what you have to know is that this fish is not very aggressive, which means that you should always introduce it with other species of fish that are also not very aggressive and above all that is the same size. And, if you put larger fish than the Cardinal Tetra fish in the same aquarium, the largest will eat the smallest without thinking. And those who do not die from being eaten will die from the stress of being continually persecuted.

Finally, we also recommend installing a beautiful decoration in the aquarium, but that, in turn, is thought of the fish. And it is that this type of fish always likes to have corners to hide, in order to feel safe when it feels intimidating.

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