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Discus - Symphysodon aequifasciata

Popular Discus (Red discus, Fairy fish)

Discus, Pompadour, Poisson-Disque (Red discus, Royal blue discus)

Latin name: Symphysodon discus

Family: Tilapia - Cichlidae

Distribution: Amazon (South America)

Adult fish length: 15-20 cm

Is the largest fish in the fish plate. This fish are very high drive, very nice inside; mouth small, oblique cover height.

The background color is golden brown or chestnut, plum color. There are still light blue iridescent clearly see the side of the fish.

There are seven dark vertical stripes, 5th stripe in the middle of the body is the widest stripe and darker stripes.

Red fish with light blue wavy lines and iridescent, extending up one part of the tree back and anus. Other parts blue.

First is the makeup of the sparkling blue naht or translucent.

Fish red disc: the original body and the dorsal, anal, red-brown.

Aquarium:

Swimming should be very wide and deep water 45-60cm.

pH: 6 to 6.8.

Temperature: 22-30 degrees C.

Breeding groups of 5-6 or more.

Food: Provide cast, worm, net-net, the shredded beef, synthetic dry food, should be changed regularly to ensure all the nutrients ...

Fed: Fish greedy, but should only eat two times a day with just enough. For clean food. After feeding (about 5-10 minutes), remove all the leftovers. Can fish fasted 24-48 hours.

Reproduction:

Hard disk fish breeding, artificial breeding tank should be slightly acidic pH (pH = 5.5-6).

Males: to shape, head slightly bent, saggy ventral, abdomen region adjacent fins indentation looks very clear, aggressive activities than females.

Females: usually smaller than males, genital spines protruding short (# 3mm), divided into 2 lobes pointed and slightly curved back.

Mating period occurs within 7-10 Nagy. pair will split a corner, mouth washing where birth. Often side by mouth, turned up tail, chasing each other, chase other children near them. Then we double wave pool, tangerine wrap together. Prior to a few days, both the phenomenon of shudder, shaking the whole body, folded fin, sometimes standing still in place, less prey. When born, the first ten to 45 degrees. Now genital spines visible, and vibrant color. Females lay eggs vertically, from the bottom up. Males also the route that information to fertilize the egg. Often 70-80 150 eggs, sometimes more.

Fertilized egg in color throughout. eggs fertilized khôgn cloudy. After 24 hours, the fertilized egg turns white or gray. At 30 degrees C the eggs hatch within 55-57 hours. While this fish father and mother turns to fan the eggs to get enough fresh air. Hatching rate: 60-90%.

So for spawning quiet (crank, cover the fish tank).

Government fry: After the eggs hatch into larvae, fish parents helped their children to a different location. Thanks greasy strands at the top, stick fry tank or a price. Fish not swimming and living nature reserve in the yolk sac of the lower abdomen. Children are to be dropped will be the parents brought back again.

After 60 hours, the fry can swim the parental fish around. Fish live their by eating mucus secreted from the parents for 12-15 days. After that, I started to eat small organisms in the water. About 18 days, the fry to eat artificial food. After 21 days we can go in search of food.

Fry for about 1,2-2mm; fish after 1 week 3mm long. About 2 weeks old, fish 1cm long, straight striped body, brown or gray. By 18 days, 1.5 cm long fish, the dorsal and ventral fins black, color. About 5-6 weeks, about 2-2.5 cm long fish, shaped like the adults, but it is not clear colors. After 3 months, the 6-7cm long and color is evident, but it was not until 5-6 months, new fish have colorful adult fish.

For the first time, from day 7, so feeding daphnia (Moina) young (small), tick one eye (Cyclops) young, several times a day, avoid eating too full. Food should be distributed evenly throughout tank, avoiding large fish paintings eat. Followed by up to two and a half months, the feeding water fleas (Daphnia). 3-4 months for the fish eat additional provision toss, worms only. Then to eat net net, the small guppies.

In the first few weeks, so keep the water temperature 29-30 degrees C. Light about 18 hours. But should not the light is too bright.

 

Blue discus, discus bleu

Latin name: Symphysodon aequifasciata haraldi

Family: Tilapia - Cichlidae

Distribution: Amazon (South America)

Adult fish length: up to 12 cm and more

 

Brown discus, discus brun

Symphysodon aequifasciata axelrodi

Family: Tilapia - Cichlidae

Distribution: Amazon (South America)

Adult fish length: 14 cm

 

Green discus, Discus vert

Symphysodon aequifasciata aequifasciata

Family: Tilapia - Cichlidae

Kinds of fish with this color is rare.

Source: "Cá cảnh" Võ Văn Chi, NXB KHKT 1993. Translated by Google Translate. Copyright © Viet Linh

 


Common diseases in discus

Illed fishes usually have dark black, swimming lethargic, or in the bottom of the tank or to sit out of the water, the flag on the tail and folded flag under corrosion. Individuals suffering from anorexia. Common diseases are:

- Achlya and Saprolegnia fungi (mold): causes small white spots on the fish body. Copper sulfate can be used for disinfection of fish with moderate concentrations.

- Nasal sores: do a parasite enters the nose, then eat the flesh of the nose, forming a large concave deep spread to the eyes and to the brain. Sick fish smells on objects to the tank, the tank, usually tilted his head down when swimming, anorexia or appetite, paging, thin. Tetracycline can be used to treat fish, but also the end when the new fish disease early. Personal illness can spread the disease to other healthy fish and can cause mass death. So pay attention to hygiene aquarium, isolated from diseased fish.

Source: "Cá cảnh" Võ Văn Chi, NXB KHKT 1993. Translated by Google Translate. Copyright © Viet Linh

 


 

Discus breeding

According to the characteristics of this 7-color fairy species, fish should be kept in tanks of the same size at the same age. Number of relatively much better than little fish.

Feeding thick but quickly contaminated water, of course must have a way of handling more water changes and attention to water filtration systems.

First fish, not so pay attention to the selection of species should stars best fish diseases, greed look flexible, healthy, body, not black, not shy, depending on the economic ability to buy more a little fish being equal.

When I first put on the feed should raise the temperature a little higher. Specifically, 33 C under not too much. Change the water several times and to eat fish several times familiar.

Should distinguish own small and large fish farming.

Fish from 3 - 5 cm:

This size is quite cheap and easy to raise. Generally the smaller the fish the more colors used, they are not afraid of the big fish.

Aquarium buy in the market size of 45 - 60 cm. At first no need to buy a big tank. Moreover large drop no more fish tanks, empty space do not fish alone.

While use 1 large tanks also many inconveniences. Small tank is better.

With the tank 45 cm should feed about 10 children size 4 - 5 cm.

With 65 cm tank should feed about 10 - 15 pieces daily water changes and fed live can nuoi to 30 did not have any problems.

Tanks do not need to cover the sand at the bottom, just heat up (or heat) with automatic temperature control parts and 2 sets of filters (need 1 working and 1 substitute when care to ensure relentless work). Maintenance must follow the instructions and do not use tap water when washing, use water right quality fish right in this.

Fish from 7 - 11 cm:

Aquarium 75 x 45 x 45 cm or 90 x 45 x 45 cm. Also used two water filters as above. 75 cm tank should be used to feed five children range in size from 6 to 11 cm, or 20 size 7 - 8 cm.

Do not sand, when individuals are allergic to light reflection on the glass, can be plastic coated or gray PVC sheets. Still the best temperature for spawning fish is 31 ° C but less than 30 C is to ensure that the individual fitness.

The replacement frequency and amount of water change should be based on: small large tank, large and small, and the number of fish less. Water System and the actual performance.

Pool with 75 cm (if only placed on the filtration system) water change 1 times per day from 50 - 70%. If using the above filter system filtration system is easily installed in the tank to work, and every 3 days instead of 1 instead of 50%. This is the actual situation was the author tested with good results.

The filters were used as of wool or synthetic fiber filter material. Food and feeding have been paying attention to water damage.

Fish of 11 cm or more:

When such large fish, fish farmers were assured would not work hard and spend a lot of effort.

Use tanks 90 cm can feed from 5 to 15, one-time feeding. 2 1st time change the water about 70 - 80%. Also use 2 above water purifiers with 1 drop in refinery tanks (also rice motor dynamic filters). Change the water reduced to 1 week 1 was 70%. Here was able to start training when fed to note whether they are eating enough?

Source: Technology discus breeding, NXB Tre, 2003, p 161-164. Translated by Google Translate.


 

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