Symphysodon aequifasciatus

Aquarium fish: Symphysodon aequifasciatus (Symphysodon aequifasciatus)
Size: 20 cm
Origin: South America
Water temperature: 26-30 ° C
Aquarium volume: 250 l

Symphysodon aequifasciatus (Symphysodon aequifasciatus) – freshwater, demanding and willingly bred aquarium fish from the cichlid family.

Occurrence

The species is native to South America. It lives in various waters in the Amazon basin, mainly in Brazil, Colombia and Peru. The discus can be found in quiet zones of rivers and flooded forest areas. They live in herds, hiding between tree limbs and stones.

Characteristics and disposition

In aquariums, the Paletka can be up to 20 cm long. It is characterized by a round, strongly flattened body. Brown-olive coloration with numerous transverse stripes across the body, the intensity of which depends on the well-being. It occurs in numerous subspecies and breeding varieties, differing in color and pattern on the body. The division into two separate species (Paletka, Discus) Symphysodon is a moot point.

The differences are slight and concern mainly the pattern on the body and the number of scales and rays of the dorsal fin. Fish available in aquarium stores are usually hybrids of discus and discus. The sex of the fish can only be recognized during the spawning period, by the shape of the genital wart, pointed in males and rounded in females. Herd fish, swimming in groups, a minimum of 5 fish is recommended for an aquarium. In less amount, one dominant fish can bully the others.

Adult individuals form pairs. They are peaceful fish, usually leaving fish that are too big to eat alone.

Nutrition and feeding

In nature, discus eat a wide variety of foods. The basis of their diet is detritus (plant and animal remains), which sometimes accounts for 50% of the food eaten. The rest are aquatic and terrestrial invertebrates, algae and leaves and fruit falling into the water.

In aquarium conditions, a varied diet of good-quality dry, live and frozen specialties (e.g. shrimp, waterfish, bloodworm, krill), vegetable with spirulina and vegetables (e.g. peas, spinach, lettuce) is recommended. Self-prepared foods based on meat, i.e. beef, horse or poultry hearts, are quite popular among breeders.

However, this is a moot point. Scientific studies show that feeding fish meat from warm-blooded animals leads to liver degeneration. Fish are by nature not adapted to digesting such food.

Aquarium

The discs must have a spacious, as high as possible aquarium, with dimensions of at least 120x40x50 cm and densely planted with plants. They are very shy fish, it is necessary to provide a large number of hiding places.

For decoration, it is best to use roots, branches between which the fish like to stay in the natural environment. They require the highest quality soft and acidic water with a pH of 6.0-6.5. Ph must be controlled and constant. The concentration of nitrates should not exceed 20 mg / l. It is advisable to filter the water through peat.

The water must be changed at least once a week in the amount of 20% – 30%. Young discus fish require more frequent changes, a minimum of 30% every other day, but it is best to change them every day. Be careful with the selection of roommates for the Discus fish. Fish cannot tolerate most of the bacteria that other fish such as Gurami can produce. Larger fish, such as Skalary , Zbrojniki , may harm them, while smaller fish, such as Neonki , Tetry , and Brzanki , may be treated as food.

Calm Kiryski will be good company .

Breeding

Discus fish reproduce relatively willingly in home aquariums. The key to success is to provide them with water of excellent quality. The water should be very soft (3-4 ° N) and acidic (pH 6) with a temperature of 29-30 ° C. When the fish pair up, they start looking for a suitable place to spawn, e.g.

a flat stone, large leaf, flower pot, aquarium glass. Before spawning, the steam cleans such a place meticulously. During spawning, the female lays the eggs in a previously selected place and the male fertilizes them by following her. This process is repeated several times and about 150-200 pieces of roe grains are deposited. After spawning, the pair guard and look after the roe – it swims over it and fan it with its fins, ensuring the supply of fresh, well-oxygenated water.

Parents should never be separated from the eggs and fry. Hatching takes place after 2-3 days. The steam helps the larvae get out of the casings. It can also transfer them to another place, e.g. to a well prepared in the substrate beforehand.

When young discus starts swimming, they stay in the immediate vicinity of their parents, feeding on a special mucilaginous secretion found on the skin of adult fish. The fry are fed in this way for about a month. After this time, you can start feeding with plankton dust, e.g. dried protozoa spores. A daily 20% water change is required.

When the young are approx. 2 cm long, it is best to transfer them to a separate tank and start feeding them with small frozen food.

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