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What is interesting is a knife fish

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What is interesting is the fish-knife

Amazing fish-knife, apteronotus (Apteronotus albifrons), or black ghost - one of the most mysterious and exotic inhabitants of the aquarium space.

External Features of Knife Fish

Ateronotus comes from the upper reaches of the great riverAmazon, belongs to the detachment of the Aterotheronovs. Only one of its appearance strikes the imagination: a fish of deep black lacks the familiar fins, and the shape of the body resembles an eel or moray eels. The lower fin, which creates oscillatory movements, accelerates its movement up to 10 cm per second and gives it a unique maneuverability.
South American Indians, meeting in the riversLarge specimens of the "black ghost", took them for the embodiment of the souls of those killed in the battle of their ancestors - so impressive was the appearance of this anthracite-black fish. By the way, even her color is unusual: during the mating period a black ghost can not be called such, because then his body acquires a red-lilac shade, and the fins become olive.
There is an opinion that knives can grow toHalf a meter in length, but the practice of domestic aquariums claim that this is a very rare case. On average, the size of these fish is from 7 to 20 centimeters. With the eel they also have an electrical sensor that allows you to detect the location of the prey in the dark by the reaction of space to the electric field of the fish.

Character of apteronotus

Justifying its Western name "black ghost"Fish can be quite cruel predators if they are not allowed in time to eat. Experts do not recommend to settle smaller fish together with "knives", otherwise they can kill small brothers in the gust of hunting passion.
It is believed that the fish-knife has its own character,Many even call it sociable, because it is she who first swims to the wall of the mini-pond to greet the owner. These fishes are endowed with a fantastic ability with the same effort to swim not only head or tail forward, but also vertically down or up, which created them in history the glory of magical creatures.

Contents in the aquarium

Contain a "black ghost" in the aquarium is easy: He does not need special conditions, except places where you can hide. In addition, for this fish it is better to buy a large aquarium, because they are very fond of chases and sports lifestyle, this requires a lot of space. If the fish has grown more than 15 cm, the aquarium will have to install a lid: the fish-knife can jump out of the water and fall to the floor. If you have settled two apteronotuses in one aquarium, provide both places for an ambush, otherwise they will begin to divide the territory and can seriously fight.

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