Главная 7 Aquarium fish 7 Discus (Symphysodon) – types, description, content, breeding

Discus (Symphysodon) – types, description, content, breeding

Habitat: inhabit the basin of the upper and middle reaches of the Amazon. Keeps in shady places of calm water bodies, especially off the coast with deposits of wood and roots of coastal plants, creating reliable shelters.

Description: discoid body, strongly flattened laterally. The head is rather small, the mouth is small. Dorsal and anal fins long, low.

Caudal fin – fan, pelvic fins elongated. In the male during the spawning period, the pointed seed line is seen; in the female, the cone-shaped, blunt ovipositor is conical.

Peaceful, not very mobile fish, shy, keep a group in the middle layer of water, like shady places, dispersed consecration.

It can be contained in general, but better in a species aquarium, with a height of a water column of 40 cm, in some places overgrown plants with a shortened stem and large leaves growing upwards, floating plants, snags.

Water parameters: temperature 28-31 C, hardness dh to 12, acidity pH 5.8-7.2.

Pay special attention to the purity of the soil and water. Some aquarists contain in a tank without soil.

Obligatory weekly change of 1 / 5-1 / 4 volume of water (also produce a daily change of 1/10 volume).

Nutrition: live, frozen and dry food, better designed specifically for Discus.

Reproduction: spawning pair. The pair is formed from a group of 6-8 copies.

In the presence of a pair of known males and females, another fish can be identified by sex by hooking it to the pair. If the fish is driven by a male, then this is a male, if the female is a female.

The first indication of the pair’s readiness for spawning is the cleaning of the substrate (vertically located plant leaf, stone, snag, etc.) and the body trembling of the fish.

The rest of the fish is better to remove or transplant a couple in a spawning aquarium with a length of 90 cm with a substrate for spawning (preferably without soil).

Water in spawning: 29-31С, dh 1-3, kh 0, ph 5.5-6.5.

The female lays up to 250 eggs on the substrate. The calf is cared for by the male, sometimes both fishes, less often the female.

To feed the fish during the care of the caviar and the larvae should be in small portions so that the feed is all eaten. When removing residues – the fish are worried and can eat the eggs or the larvae.

The incubation period is 2-4 days, the fry swim in 3-4 days and for about a month they feed on special secretions on the skin of the parents, while clearing one, they transfer to another. There are cases that fish have no discharge, which leads to the death of offspring.

There are cases that fish are fighting because of offspring. In this case, it is recommended to divide the aquarium with a partition that does not reach the bottom by 1 cm, so that the fry can swim from one parent to another, which are separated by this partition.

After 5-7 days, the fry begin to give live dust (preferably red in color, in this case, the fry can see the feed) on the reddened belly of the fry and produce a daily change of 1 / 5-1 / 4 of the volume of water, preserving its parameters. After the fish stop feeding the fry secretions, they are removed.

Fish are able to spawn in the 2nd year of life.

All species interbreed with each other. There are many color variations.

Symphsodon aequifasciata haraldi Schultz, 1960

Inhabit the basin of the upper and middle reaches of the river. Amazon.

Length up to 20 cm, in an aquarium up to 12 cm.

The main body color is brown, the head with a purple tint, the body is crossed by 8-9 dark transverse bands. The snout, the region of the back and belly, as well as the back and anal fins are covered with shiny longitudinal blue wavy lines.

The dorsal and anal fins at the base with a wide, dark purple zone, the outer part is yellowish. Abdominal fin red.

The royal form has a red-brown basic color.

Symphsodon aequifasciata Pellegrin, 1903.

Inhabit the area of ​​the upper (in Peru) and middle (between the city of Tefé and Santarem) flow p. Amazon.

Length up to 20 cm, in the aquarium up to 15 cm.

There are several coloring options:

1. The main color is brownish-green, on the side there are 8 dark brown transverse stripes, on the head and gill cover are light blue stripes. The dorsal and anal fins at the base are black and blue, above the olive green with a light pattern.

2. The main color is maroon, with 9 dark transverse stripes running along the side. Dorsal and anal fin green with a pattern of wavy green-blue lines.

3. The main color is blue, on the gill cover drawing of dark red lines.

4. The main color is silver with a greenish tint. There are red dots on the head and fins.

Symphsodon aequifasciata axelrodi Schultz, 1960

Inhabit the region of the middle and lower reaches of the river. Amazon.

Length up to 20 cm, in the aquarium up to 15 cm.

The main color is yellowish to dark brown. On the side there are 7-9 dark transverse bands.

Placed on the head and at the base of the dorsal and anal fin are shiny wavy bluish-green lines. The outer part of the dorsal and anal fin, as well as the entire pectoral fin is pink-red.

Discus red / Discus simple / Discus ordinary

Symphsodon discus Heckel, 1840.

Inhabit the pool r. Rio Negru.

Length up to 20 cm, in the aquarium up to 15 cm.

The main body color is reddish yellow to brown. 15-18 brilliant bluish longitudinal wavy lines go over to the dorsal and anal fin all over the body.

On the side there are 9 dark transverse stripes, of which 1, 5 and 9 are clearly visible, the rest can disappear.

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