Ancistrus (Ancistrus Dolichopterus)

Ancistrus (Ancistrus Dolichopterus)
Ancistrus (Ancistrus Dolichopterus)

Video: Ancistrus (Ancistrus Dolichopterus)

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Video: Анциструс обыкновенный (Ancistrus dolichopterus) 2023, February
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Ancistrus ordinary, or blue catfish-ancistr (Bristle-nose plecostomus) - one of the most popular aquarium catfish. Unpretentious to the conditions of detention, but at the same time picky about the purity of the water. In aquariums, he prefers plant foods. Peaceful calm fish, staying in one place for a long time, hiding among the shelters. An excellent choice for beginner aquarists. Clashes over territory are possible between adult males, so it is recommended to keep the fish alone or one male with several females.

Ancitrus, blue catfish (Ancistrus dolichopterus), photo photography aquarium fish
Ancitrus, blue catfish (Ancistrus dolichopterus), photo photography aquarium fish

Habitat: South America - Amazon, reservoirs of Brazil, Guyana, Peru.

Habitat: freshwater rivers and streams with fast currents, lakes of virgin forests, swamps and ditches with "black" water.

Description:the body is flat, flattened, completely covered with polygonal bone plates. The head and front of the body are flattened from top to bottom. The mouth is rounded lower; elongated lips with horn-shaped suckers, thanks to which fish are well kept in a strong current and can live in fast-flowing waters, sticking to stones and snags. On the suction cup there are horny tubercles ("graters") designed to scrape off various vegetation from the surface of plants, stones and other objects. The dorsal fin is large, flag-shaped, often pressed to the body, the ventral and pectorals are wide and large. There is a small adipose fin. On the head of males around the upper jaw there are paired skin growths ("whiskers"), which in old individuals reach one and a half to two centimeters and even branch.In females, the processes are poorly developed throughout life and are almost invisible.

Ancistrus lacks a swim bladder, and they cannot hang in the water column for a long time, like other fish.

Color: gray-black or brown with dots. The lower, abdominal, side is lighter than the back. The fins of the ancistrus are bluish, less often black, rows of dark spots are clearly distinguished on the dorsal and caudal fins, and more vague spots of a grayish-blue or olive color on the ventral and pectoral fins.

Size: males up to 15 cm, females up to 10 cm.

Life expectancy: 6-10 years.

Leopard Catfish (Corydoras leopardus)
Leopard Catfish (Corydoras leopardus)

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Ancitrus, Ancistrus catfish (Ancistrus dolichopterus), photo photography aquarium fish
Ancitrus, Ancistrus catfish (Ancistrus dolichopterus), photo photography aquarium fish

Albino form. Photo Ricardo Kobe

Aquarium: all types of freshwater aquariums.

Dimensions: the minimum volume for one catfish is 50 liters (preferably 100 liters) and at least 50 cm in length, for 3-4 fish an aquarium of 200-250 liters is required.

Water: dH up to 15 °, pH 6.5-7.5, KH 0-5 °, strong current, intense aeration, good filtration. Weekly water change up to 25%. They love clean, oxygenated water. A few handfuls of dry oak, beech, or Indian almond leaves can be thrown into the water. The leaves are replaced every two weeks.

With a lack of oxygen in the water, the ancystras begin to rise up the walls of the aquarium until their muzzle practically sticks out of the water. If fry and juveniles behave this way, this indicates the need for an urgent change of part of the water and cleaning the aquarium.

Temperature:about 22-25 ° C. Easily tolerate temperature fluctuations within 17-30 ° C.

Lighting: the light regime should consist of two phases even in time - dark and light. Between these phases, if possible, a period of twilight lighting should be created (about 30-40 minutes) - at this time the ancistrus are most active. A low power incandescent lamp (about 25 watts) is suitable for this, the light of which is directed at right angles to the wall of the aquarium.

Substrate: round gravel or coarse sand.

Plants: thickets of living plants (anubias, javan moss), including floating ones, creating shaded areas.

Registration:numerous caves, stones, driftwood, roots and branches (from soft woods), ceramic pipes, large shells that serve as shelter and resting place for catfish. Large stones must be stable and at the bottom. The shelter should correspond to the size of the fish and there should be more of them than catfish.

Ancitrus, catfish ancistr (Ancistrus dolichopterus), photo photograph of fish
Ancitrus, catfish ancistr (Ancistrus dolichopterus), photo photograph of fish

Feeding: in aquariums, ancystras catfish perfectly eat bloodworms and tubifex, as well as freshly frozen daphnia and cyclops. Fish fillets, seafood cocktails, mussel meat will also be eaten with pleasure. In addition, scalded lettuce, nettle, spinach, dandelion, young shoots of aquatic plants should be included in their diet - up to 60% of the total diet. With an irregular diet, they become aggressive and carnivorous. Very voracious fish. They also eat dead fish.

Adult fish are fed at least twice a day (once in the evening).

Fry up to six months need the constant presence of food. From six months of age to adulthood, fish should be fed at intervals of no more than three hours (tubifex, bloodworms, and enchitreus are left overnight).

Due to improper feeding of ancistrus, the metabolism is disturbed, which can be evidenced by: weight loss and loss of appetite, a sharp loss of color, behavior unusual for the species (spinning, somersaults, swimming in a vertical plane, etc.).

Ancitrus, Ancistrus (Ancistrus dolichopterus), photo photograph of a fish
Ancitrus, Ancistrus (Ancistrus dolichopterus), photo photograph of a fish

Behavior: Ancistrus is twilight and nocturnal. In the aquarium, catfish-ancystras are in constant motion (most of the time they search for remnants of living and plant food at the bottom). These fish adapt to new conditions rather quickly, and young fish at the age of 2-6 months adapt faster.

Personality: peaceful, territorial. Males tend to choose a certain territory and defend its inviolability. Several males can only be kept in the same tank if the size of the bottom allows it and there are many different hiding places. There are often skirmishes between ancistrus males, so it is better to keep one male with several females or alone.

Water zone: bottom layer of water.

Can be contained with:peaceful fish with similar conditions of detention.

Cannot be kept with: slow, clumsy or scaleless fish.

Ancitrus, Ancistrus catfish (Ancistrus dolichopterus), photo photography aquarium catfish
Ancitrus, Ancistrus catfish (Ancistrus dolichopterus), photo photography aquarium catfish

Breeding fish:Ancystras can spawn both in the general aquarium and in the spawning grounds. Spawning is paired or nesting (1 male and 1-2 females or 2 males and 4-6 females). The male is placed in a prepared reservoir a week before spawning. Spawning is stimulated by simulating the rainy season in nature - an intensive water change with enhanced aeration is performed. 30-50% of the total volume of water should be replaced daily with a simultaneous decrease in temperature to 20-21 ° C. Spawning aquarium from 50 liters per steam, strong aeration. Fish spawn in shelters, so it is recommended to install a ceramic or bamboo tube with a diameter of 25-35 mm, preferably dark and opaque, in the reservoir in a vertical position, and free at least a third of the bottom surface from the soil. It is recommended to place an air spray near the shelter. Water parameters: dH 5-10 °, KH not higher than 2 °, pH 6-7, T 21-26 ° C.The female usually spawns at night, laying a cluster of eggs on the surface prepared by the male, the number of which depends on its size and age. For 5-6 days, the male guards the eggs, not allowing anyone to approach it. Additionally, it fanns the eggs with fins, creating an influx of fresh, oxygen-rich water. After 1-3 months, the ancystras are ready for re-spawning.

Sex differences: females, as a rule, are larger, longer and slimmer than males, their body is higher, fins are longer and sharper.

Puberty: begins at the age of 8-12 months.

Number of eggs: up to 100 yellowish eggs (about 2-3 mm in diameter).

Incubation period: 4-7 days.

Offspring: Newborn larvae are large enough - about 5 mm in length. At this point, the male is transplanted into a common aquarium. Feeding of fry begins after 1-6 days, when the yolk sac has noticeably dissipated. Water parameters for fry: pH 7.3, dH 8 °. In a nursery aquarium (without soil) there must be several small shelters and driftwood. The water needs to be changed daily by about 20%.

Growth rate:fast - under favorable conditions, larvae at the age of 3-4 weeks reach a size of 1.5-2 cm. By 10 weeks the fish can grow up to 3 cm. The growth rate of fry depends on the stocking density, volume and water temperature.

The following temperature regime is recommended: from the moment of switching to active nutrition to one month of age - 27-28 ° C; up to six months - 25-26 ° C; after six months - 22-24 ° C.

Feeding juveniles: starter feed - brine shrimp nauplii and vegetable paste. Feeding should take place at least three times a day. The grown-up fry of ancistrus can be given canned green peas peeled from the skin. Do not overfeed your ancistrus fry and leave undisturbed food in the aquarium.

One of the feeding schemes: 50% of the diet - brine shrimp nauplii; 25% - scalded chopped green peas; 25% - scalded chopped cauliflower or kohlrabi, added at a rate of 1: 1 to an egg omelet in milk; overnight, the larvae are left with ready-made dry food.

After 10 days the fry are gradually transferred to the following diet: 40-50% - fresh brine shrimp nauplii or decapsulated eggs - up to 40%; 50% - plant food (chopped scalded lettuce, spinach, dandelion, etc.); after a month, up to 10% of white bread or washed and scalded Hercules flakes can be added to the diet.

Jumping from parents: the female is jigged after spawning.

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Ancitrus, Ancistrus catfish (Ancistrus dolichopterus), photo aquarium fish
Ancitrus, Ancistrus catfish (Ancistrus dolichopterus), photo aquarium fish

Veil form

Diseases: when infected with helminths, fenasal, tetramisole or niclosamide are added to the feed in an amount of 2-3% of the weight of the fish. If necessary, processing is carried out 3-5 times.

The use of bulky, swelling plant foods can cause bloating in the Ancistrus, sometimes resulting in their death. If signs of malaise appear, it is necessary to replace half the volume of the aquarium water with a fresh, lower (by 2-3 °) temperature, increase aeration and water flow.

Comments: it must be remembered that ancistrus can get into the filter and die there, therefore it is recommended to raise the outlet tube at a slightly greater distance from the bottom, or close it with a net.

There are several color forms on sale: brown, pinkish, gold, albino, veil and black.

Under certain external factors, Ancistra catfish can change sex - with a prolonged absence of males in the aquarium, one of the females can turn into a male with all its inherent characteristics and qualities (and the ability to fertilize eggs).

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