The cardinal tetra is a little, lovely fresh water fish. It looks like the neon tetra, and is frequently confused with this progressively normal fish. Cardinal tetras are local to Brazil and Venezuela, and are found in the upper Orinoco and Negro waterways. Most cardinal tetras accessible in fish stores are wild-gotten; however increasingly reared ones have opened up as of late. Be that as it may, in contrast to numerous other fish, the cardinal tetra fishery is accepted to be supportable and this species isn’t at present compromised in nature. A decent method to tell if the fish are wild-gotten is to examine them for balance harm brought about by the nets used to get them.

Cardinal tetras fundamentally found in little, vigorously concealed streams and the waters are frequently a tangled labyrinth of tree roots, branches and plant flotsam and jetsam. Be that as it may, it can likewise be found in progressively untamed waters, yet just in regions with thick amphibian plant spread.

They are fleeting in the wild, and it is accepted that most just have a life expectancy of around one year. In the home aquarium, they will live more, and whenever gave the best possible conditions, they may live upto three years. In any case, their life expectancy will be altogether decreased in the event that they are kept in poor conditions, or in hard water.

Cardinal Tetra India Online


Basic Information

Scientific name – Paracheirodon axelrodi

Nature – Peaceful

Assistance level – Easy to maintain

Originated in – Brazil, Columbia and Venezuela

Commonly known as – Cardinal Tetra, Red Neon Fish

Size range – 2”

Habits and Care

Same like the neon tetra, this species also requires a developed tank that has delicate acidic water. All the more critically, water flow should be steady. This isn’t an animal group that does well in a recently begun aquarium. The perfect pH is beneath 6, and the hardness ought not to be over 4 dGH. Exposing this species to water that has a high mineral substance is a formula for unexpected weakness and abbreviated life expectancies. The water temperature can include a more extensive territory, from 73 to 81 degrees F (23 to 27 degrees C).

Lighting ought to be stifled as ought to the stylistic theme. Skimming plants are decent methods for directing the lighting. Despite the fact that they require some concealing spaces, it is essential to give them some vast water swimming territory too. A very much planted tank with an open community space is a perfect territory for this species.

Cardinal tetras will in general be fragile in a closed aquatic space, and are touchy to poor water conditions (counting nitrates). Along these lines, they ought to be given the biggest aquarium your accessible space (and spending plan) can accommodate. While numerous individuals suggest a 10 gallon (38 litres) tank as the base tank size for them, a 20 gallon (75 litres) would really be a superior decision. It is significant that they be furnished with delicate, acidic water in their tank. While captivity reared cardinal tetras are to some degree versatile to harder waters, wild-got ones don’t adjust well to fundamental, respectably hard water.

Cardinal tetras are a shoaling fish, and they ought to consistently be kept in gatherings of at any rate six. All things considered, they do incline toward bigger gatherings, and numerous individuals suggest keeping them in gatherings of no under ten. They ought to be kept in curbed lighting, and this can best be cultivated using coasting plants or a diminish light. A dull substrate is ideal; however a sand substrate is likewise adequate. Some aquarists spread the substrate with leaf litter to all the more intently impersonate their indigenous habitat. In any case, this ought not to be seen as a prerequisite, and brings an entire host of different issues with it. Be that as it may, live amphibian plants are an outright should, and some magnificent plants which can flourish in low light are cryptocoryne wendtii, Java greeneries, Java greenery, and most types of Anubias.

Difference between Neon Tetras and Cardinal Tetras

In case you’re experiencing difficulty telling neon tetras and cardinal tetras separated, you’re not the only one. Be that as it may, there are a few different ways that you can separate these two fundamentally the same as looking fish. The most ideal approach to reveal to them separated is to take a gander at the red stripe on their body. On a neon tetra it just stretches out most of the way to its nose, while a cardinal tetra’s expands nearly the whole length of its body. Additionally, the blue stripe will be considerably more distinctive on a cardinal tetra, in spite of the fact that this takes a prepared eye to see.


The cardinal tetra is an omnivorous species and will acknowledge most nourishment. These fish have high nutrient prerequisites, so at any rate 75 percent of their food ought to be quality drop food. Cardinal tetras particularly acknowledge live and solidified nourishments, yet whenever took care of them solely they may dismiss arranged food later on. In the event that just doing one to two feedings per day, offer what they can eat in around five minutes. Be that as it may, it is smarter to take care of these fish a few times each day, offering just what they can eat in around three minutes. All nourishments ought to be in little pieces as cardinals have a little mouth. When growing them from small, live nourishments are significant.

Cardinal tetras are basically meat eating in the wild, and they feed on little spineless creatures, creepy crawly hatchlings and bug eggs. In any case, even wild-got neon tetras will rapidly take to a drop food, however they will in any case welcome the expansion of live or solidified nourishments to their diet plans. While picking a drop food, it is best to choose Hikari Tropical Micro Fish Food, which is explicitly intended for little mouth fish.

When picking live nourishments, the best decisions are daphnia, mosquito hatchlings (unlawful to develop in certain regions), and grown-up salt water shrimp. Numerous other ordinarily accessible live nourishments will in general be unreasonably huge for cardinal tetras to devour, however you could likewise attempt black worms or bloodworms to check whether your fish will acknowledge them.

Finding the gender

Males and females show scarcely any unmistakable contrasts between the genders. Females to some degree will have a more profound body with a rounder paunch, while male fishes are increasingly slim. They additionally have a snare distending from the butt-centric balance.


Rearing cardinal tetras are a huge task in best case scenario. A different rearing tank is significant, and it must have stable water level: a pH of 5.0 to 6.0, and exceptionally delicate water of 3 to 5 dGH or beneath is fundamental. They will generate at night, for the most part laying somewhere in the range of 130 and 500 eggs. Bringing forth will proceed even late into the night hours. In roughly 24 hours, the eggs will bring forth and live off of the yolk sac for another four to five days. When the fry is free swimming, feed them infusoria, rotifers, egg yolk, or industrially produced fry food. Follow this with newly brought forth salt water shrimp as the fry develop. Lighting must be kept extremely low; utilize gliding plants to guarantee the tank stays dim. The youthful tetra fry is exceptionally photographed delicate. This species arrives at a develop size of up to two creeps in home aquaria.

Reproducing cardinal tetras can be troublesome, and they require exact conditions to bring forth. In the wild, they breed in zones that are totally encased by the rainforest covering. Under the haziness of the interlaced tree limbs, they breed in gigantic reefs; however they will raise young ones in little gatherings, or combines in the home aquarium. A rearing tank must copy their characteristic reproducing living space as intently as could reasonably be expected, and ought to be totally concealed from any light. The water should likewise be exceptionally delicate and acidic, and nitrates must be kept to a flat out least. The perfect temperature for a rearing tank is around 82ºF (28ºC).

Any fish tank utilized for reproducing ought to be totally cycled, and a wipe channel is suggested for filtration. Live plants ought to likewise be given; as this is the place the cardinal tetras will disperse their eggs. Java greenery is an incredible decision for this, and will likewise give spread to infant fry. When a male and a female have been chosen for rearing, they ought to be set in isolated tanks. They should then be adapted with live nourishments, until the female seems swollen with eggs, and the male is showing clear hues. When they look prepared to generate, they ought to be put together in the reproducing tank.


In the event that they are prepared to mate, the male will seek after the female into the live plants. In the event that the female is responsive, she will swim close by the male, and the male will discharge his sperm, while the female at the same time discharges her eggs. The fishes can be evacuated once the eggs become obvious, or they can be left in the aquarium until you notice free swimming fry. Notwithstanding, the fry ought to be raised all alone, and the grown-ups ought to be expelled when it very well may be affirmed that reproducing has occurred.

On the off chance that the eggs are not presented to any light, they will incubate in a few days. When the eggs are presented to any kind of brightening, they will bite the dust. The infant fry are likewise delicate to light, and ought to be kept in low light conditions for in any event seven days in the wake of bring forth. Now they can be gradually acquainted with expanding levels of light. Recently incubated cardinal tetra fry can be taken care of infusoria or any of the financially accessible fry nourishments. Following half a month, they can be preceded onward to child brackish water shrimp, miniaturized scale worms, or finely squashed piece food.


Neon tetra illness, Plistophora hyphessobryconis has a place with a gathering of living beings called protozoan parasites. Little is thought about this parasites. The illness doesn’t simply contaminate neon tetras; other comparative fish can likewise get tainted. The primary sign is limited loss of shading, little fish like cardinal tetras regularly blur their shading around evening time and this is ordinary yet with this illness the loss of shading is generally situated in one little fix when the remainder of the fish is showing typical hues.

At first the fish will keep on living as would be expected yet not long after the main side effect shows up the influenced zone will begin to die, this squandering will eventually prompt the spine turning out to be wrinkled and the fish will not, at this point have the option to swim regularly. When manifestations have indicated the fish is affected, the indications of this infection never recoup thus to forestall further affliction, when a fish has been decidedly related to this malady killing is the kindest alternative.

Shockingly there is no treatment for this condition. The most ideal approach to forestall its spread is to evacuate any fish indicating these manifestations before the sickness can be given to other fish. Attempt an enemy of bacterial treatment in light of the fact that there are a couple of bacterial maladies which offer ascent to comparative manifestations. In the event that this doesn’t help, at that point it is neon tetra illness. In the event that the fish recuperate with this treatment, at that point it wasn’t brought about by neon tetra illness yet was a bacterial contamination. It is this which has likely prompted bits of gossip about specific items having the option to fix this illness. Killing is the best choice when a fish is seen with side effects this will help stop the spread and forestall superfluous misery.


When choosing fish to purchase, particularly little tetras in every case cautiously check the tanks inhabitants on the off chance that any look unfortunate; at that point dismiss all the fish in that tank. It just takes one fish with this condition to contaminate a whole aquarium.

Leave a Reply

Your email address will not be published. Required fields are marked *