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Knife read eyelet suitable for any species aquarium

Hello dear readers! Knife-read ocellar is an interesting aquarium fish, which belongs to the Notopter family.

You can also find two other names: oral’s hita and indian ophthalmic knife. The knife read lives in large rivers of southeastern Asia, Burma, India, and Thailand.

The knife has a hunchbacked body, flattened on each side, painted in a silver-gray shade and everything is studded with small scales. There are large dark spots with a white border along the entire body on both sides.

The number of these spots can vary from 6 to 15 pieces. The dorsal fin of a fish is very small and very similar to a feather. But the anal fin is very long.

It originates from the pectoral fins and smoothly becomes the tail fin. The fin moves constantly, causing the fish to swim.

Young fishes on the anal fin have an attractive patterned pattern, which consists of a large number of light interlaced lines. There is a pattern that the brighter this pattern on the tail of the young, the larger and more expressive the spots will be throughout the body when the fish reaches puberty.

Thanks to the pectoral fins, the fish can make various maneuvers.

In the mouth of the knife has a large number of small teeth. Another interesting feature of this hydrobiont is that it can swim both forward and backward.

The respiratory organs of fish are somewhat similar to labyrinth fishes (gourami, lyalius, macropods). A knife that reads can equally well breathe oxygen and atmospheric air dissolved in water. Very often you can see how the fish rapidly rises to the surface and takes a breath of fresh air.

It is possible to distinguish a male from a female by the size of his body and his slenderness, in males it is relatively slimmer than that of females. During spawning, the abdomen of females becomes rounded. Under good conditions, the fish can live up to 10 years.

Under natural conditions, the knife can grow up to a meter in length, but in conditions of captivity rarely exceeds 30 centimeters.

Ophthalmic knife is a real predator, which regularly shows aggression to all fish, without exception, even to their relatives. For this reason, it is recommended to keep only young fish in aquariums, as adults require an impressive free space, which is limited by our cramped housing.

This aquatic animal is preferable to contain one by one or with other fish, the size of which is not inferior to the knife. It is not recommended to place a pair of males in one tank, as during frequent skirmishes they will cause serious damage to each other.

Very often the throat ligament suffers, as it is the most vulnerable spot.

Fish can injure the throat ligament not only during a skirmish. Very often, the cause of this damage is a large piece of food, which is swallowed by fish and a strong fright, in which the aquatic animal can easily be injured by hooking on the decor element or the wall of the aquarium. During the daytime, the ophthalmic knife hides in the thickets of long-stalked plants (ambulia, cabomba, vallesneria) and stones, and when dusk sets in, the fish goes to fish.

Basically, the knife is held in the lower or middle layer of water.

For the successful maintenance of fish will require a sufficiently capacious reservoir, the length of which should be at least 120 centimeters, where you will need to organize a sufficient number of shelters of stones and koryag. Aquarium plants are planted along the machine banks, so you leave your pet a maximum of free space for swimming. The temperature of the water in the aquarium should be in the range of 24-28 degrees, and its hardness is not more than 10, the active reaction of the medium should be in the range of 6.0-6.5 pH.

Do not forget about the weekly substitution, aeration and powerful filtering. The knife read eats live food.

As feed, you can use small fish, benthic invertebrates and tadpoles. To accustom your pet to non-living foods, such as meat and fish fillets, squid and beef heart, it is necessary to do this gradually.

By the age of three years, the knife reading becomes sexually mature. To breed fish you need an impressive aquarium, the length of which should be 1 meter minimum. At the bottom it is necessary to install all kinds of shelters and lay flat stones.

On the surface of the water should float floating plants (azolla, riccia, pistiya). The temperature of the water in the spawning aquas should be 26-28 degrees, the hardness is not more than 5, the acidity of 6.0-6.5 pH.

With the onset of the incubation period, the duration of which can be delayed for a week, the male carefully takes care of his offspring. He stands on the protection of caviar and constantly cleans it of organic residues deposited on the eggs. With the help of his tail, the male creates a stream of water to the calf.

After the appearance of the fry, they should be immediately transplanted into a nursery aquas, where they are fed with nauplii of Artemia.

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