Dear colleagues. Today I would like to share with you one volume material that caught my eye on a foreign resource. The article told the author about the subtleties of breeding discus at home.
You probably know that this fish is demanding and capricious in its content, and even worse in breeding. Therefore, I advise you to be patient and devote 15-20 minutes to study the article I prepared for you.
I will not reveal the secret, if I say that breeding discus is a very difficult task. Not every experienced aquarist can boast of his success in breeding this beautiful aquarium fish.
The main difficulties consist in numerous subtleties and peculiarities of the biological structure of fish, which competitors are obliged to know.
At once I would like to warn you that in nature there is no single and universal guide to breeding discus. The main reason – each pair of fish requires an individual approach. But you must remember that if you want to get offspring from them, you must create as close to natural conditions as possible in the aquarium.
The water in the aquarium should be saturated with tannins and have low rigidity, the temperature should be kept around 30 degrees, the aquarium should be constantly purged with an aerator and in the aquarium should be organized weak and around the clock lighting. Yes, and I almost forgot about the most basic requirement – constant silence.
An aquarium with dimensions of 60 × 50×50 centimeters is suitable for the role of spawning. A clay tube is installed in the jar, the height of which should be in the range of 25-30 centimeters, on which the fish will lay eggs.
The discus reaches sexual maturity at the age of the year (these are males), sexual maturity in females occurs a couple of months earlier, but on condition that the water temperature in the aquarium is kept constant at around 30 degrees Celsius. If the aquarium is small, then puberty is delayed by one and a half years.
For spawning it is necessary to choose the most healthy and brightly colored fish.
Unfortunately, the discus genes are devoid of clear sexual dimorphism, but the males grow somewhat larger and more lobster than females. Also, the males extend the ends of the dorsal and anal fins, and the ventral fins will be wider and longer than the females.
The females of discus are more mobile and have a rounded body structure. To spawn, the aquarist does not need to pick up a pair, the fish will do it themselves.
Pair formation occurs in a small flock, which has 6-8 individuals. You will immediately notice the formed pair: the fish will constantly be near the spawning substrate, or they will swim together and twitch with their fins.
Larvae of discus
There are cases when fish need to be determined in adolescence. In order to do this, it is necessary to carry out the following method: A young fish takes turns in an adult pair of discus fish and see which fish starts chasing the young one. As a rule, do this same-sex discus.
If the discus eats its own eggs or young, and this has already happened over the course of 5 clutches, then these fish must be planted out. It would also be nice to adopt the old and proven method of tsikhlidnik – to cover the aquarium for the period of spawning.
Mostly spawning at discus occurs in the evening time. Marriage games are short, after which the couple will start cleaning the substrate for spawning. For some half an hour, the female can lay up to 250 eggs, which are instantly fertilized by the male.
At the end of spawning, the care of future offspring lies on the male, which hovers above the clutch and fan it constantly with its pectoral fins. The female can replace the male, but for a short time.
It is extremely rare that both parents hang over clutch.
If the spawning temperature is at a 30-degree mark, the eggs will darken after two days, and after two days the first larvae will begin to appear from the eggs. After larvae hatching, the producers will transfer them from the nest to a clean place. This procedure for several days can be performed 3-4 times.
It happens that when the larvae flutter strongly in the substrate, they can fall out of it. And then caring parents find the larvae that has fallen out and return it back to the substrate.
For this reason, the spawn is left clean.
After the parents have moved the larvae to a clean place, the crucial moment comes when the youngs will move to the parents to begin to eat the skin secretions. At this time, the discus family should be left alone and set up moderate lighting in the aquarium. If the body of the parents is dark and the head is white, then the fish are ready to receive their offspring.
If you suddenly notice that the fry instead of sticking around the parents are clogged up in corners or swimming around the whole aquarium, it means that they will all die. Remember about this feature when breeding discus, otherwise all your attempts to breed this fish will be doomed to failure.
While the fry feed on the secretions of the parents, the adults eat very little. To feed the fish you need small portions of clean tubule.
Unfortunately, you should not feed the fish with the chowder and bloodworm, as they will annoy the producers with their sharp movements. As a result, they will kill the bloodworm, but they will not eat it.
This will further lead to turbidity of water, and this is an extremely negative phenomenon in aquariums, where there are such fastidious fish.
If a couple of producers turned out to be a calm and strong couple, then you can not rush to feed the young. A healthy discus is able to feed up to 10 days of its fry without damage to its health. But if you got offspring from an uncivilable or weak couple, then the fry should be fed already the day before the fifth, and sometimes even the third.
The best food are the nauplii cyclops and rotifers. Seasoned debaters do not recommend to feed young discus with infusoria. After a couple of days of your feeding, the fry begin to use artemia and since then they are fed more often, but in small portions.
Together with live food, the little thing will chew on their parents.
For some couple of weeks fry will grow by one and a half centimeters and will get the form of parents. In principle, young animals are becoming independent by this point, but at the slightest fright, they immediately return under reliable parental protection.
As they grow, the fry begin to consume larger types of food. After 30-40 days, a special secret from the parents ceases to stand out, and the size of the fry by this point is already more than three centimeters and they no longer need parental care, and they are not afraid of a change in their habitat. But fishing from aqua needs not fry, but producers.
You must agree, catching a couple of fish is much easier than catching fry from the whole aquarium. And besides, manufacturers are much faster adapting to new conditions and quickly come to a calm state.
Water changes in the spawning aquarium should be started at the same time as you begin to feed the fry. First, the doses of fresh water should be small, and then larger and larger. Fresh water should be free from chlorine and its temperature should be the same as in spawning.
Water changes not only allow you to maintain cleanliness in the spawning aquarium, but also have a positive effect on the growth and appetite of the young. It is considered quite normal if within a year the discus reaches 10-12 centimeters in length.
According to Dr. Innes, discus length 76 millimeters can already produce offspring. The majority of debaters are interested in one thing: is it possible to feed juvenile discus without parents?
This is an extremely difficult task, but it is doable. This was proved by the well-known discussion-makers Mac Galbert, Jack, Wattle, Carroll Friswold and Hans-Georg Petersmann.
There are two ways that bear fruit, we will now talk about them. The first way is to slip the clutch to another pair of fish, but in a small farm it is almost impossible. The second way is to feed the fry with artificial food.
However, in this case, a lot of problems will fall on the head of the aquarist. The fact is that until you pick up the appropriate food, you will kill more than one hundred fry.
And besides, raising young fry of discus requires tremendous patience from the aquarist. But this is not worse, the problem is that the artificially fed discus will not be able to isolate the secret for feeding their fry.
I hope today’s recommendations were useful for you, I was glad to try to prepare this post.