FAQ for aquarium fish
In this article I will try to answer the most asked questions aquarists-beginners. So, here we go. Question: what should be the minimum size of the aquarium? Answer: 20-30 liters.…

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Fishing for predatory fish
Walleye is a fish that belongs to the family percidae. The weight of this large predator in good conditions can reach 20 pounds. And at length it can grow up…

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Sea catfish
Signs. Body elongated, laterally compressed, glabrous. The coloration of back, sides of body and all fins, except the ventral, zelenovato-grey, almost black. Dorsal fin very short, is located ahead of…

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JELLYFISH OF THE BLACK SEA

Surely You in his life met in a sea of jellyfish. They are small, and there are also very large, also they are all different colors, there are white, red, green, blue, dark blue, iridescent. Many of You are very afraid of jellyfish, because they leave burns, and mildly attack to defend their.

The life cycle of jellyfish consists of two stages. One of these polyps attached to a solid substrate, – a settled form. Reproduce by budding. On the other – the descendants of polyps are born in the form of well known gelatinous formations. Experts call this form of “sex”. Gelatinous body of a jellyfish is shaped like a bell or umbrella; compressing it, the animal is the oldest image of a jet engine. At rest, the jellyfish are moved by the waves and currents. On the edge of the body of the jellyfish tentacles are armed with stinging cells that pierce into the skin of the victim and paralyzing it. Person paralysis is not threatened, but a meeting with some of the ocean species of jellyfish may end up with a serious burn. The largest jellyfish reach 2.3 meters in diameter.

Near the Crimean coast most often found three types of jellyfish.

KORNEROT characterized by the presence of brightly colored bundle of tentacles hanging from under the dome.Medusa reaches a diameter of 35 centimeters. Stinging cell comerota gutsa no worse than nettle, but these burns completely disappear within a few minutes.

The largest black sea jellyfish RHIZOSTOMA diameter reaches 60 cm, has well expressed the skills of active travel and “stings”, although weaker than nettle, but also quite noticeable.

The most common species of the black sea, AURELIA, also known as sea silver, much smaller, rarely reaching 20 cm in diameter, “floats” much worse, stinging cells that jellyfish are not able to penetrate in human skin and “burn” even a small child.

Tip – when meeting with Medusa and direct contact with her, best of all at once not leaving the water gently to wash the place of contact with her. Strongly recommend not to RUB, because You can only make the burn by rubbing the remaining substances from jellyfish on your skin. Be careful, but remember that if it burned, then nothing scary in this. Will take place in five minutes.

Predatory fish Piranhas
Piranha — all species of freshwater fish of the family of tetras that live in the rivers and reservoirs of South America. The word “piranha” has its roots from the…

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Fish farming at home — a serious business
Men love fishing, eagerly they're waiting for the moment when finally come to the pond will begin to relax and to fish. If you approach this holiday with the commercial…

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