Predatory ponds
As pike and perch in our waters are not as widespread as for example carp, information about the waters where they live is of great value to fishermen, especially beginners.…

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Aquarium marine or freshwater
Before every novice aquarist that decided to save on diving and make your home a magical underwater world, the question is: marine aquarium or freshwater. On the one hand, freshwater…

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Fishing for carp on a pond feeder
Good day, dear fishermen! In this article I want to share with you my impressions from one of my fishing trips, which took place last summer at a pond near…

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Planaria in aquarium

Often together with live and ice cream feed, snails and plants in the aquarium water are worms that have a pink and white color and the triangular front part. They are called planaria and can be dangerous to the health of the shrimp. Often these worms belong to the species Dugesia gonocephala or other varieties of flat worms that live in fresh and marine waters worldwide. Most often they are found in the soil column, but often planarians can be seen on the surface of the water, moving with the help of special cilia on the body. Because of this, they are also often referred to as the ciliary worms.

Planaria is a typical hermaphroditic, so after internal fertilization without the participation of other individuals on light appears fully viable offspring. The planaria eggs are resistant to high and low temperatures, so get rid of them is quite difficult. These worms there is no one specific organ of respiration, the aeration process occurs with just the skin. Continue reading

Found the largest predator in the history of the planet

Reconstruction of the head Mapusaurus roseae (AP Photo/HO/Rodolfo Coria).

Paleontologists Philip Carey (Philip Currie) from the canadian University of Alberta (University of Alberta ), and Rodolfo Coria (Rodolfo Coria) from the Argentinean paleontological Museum Carmen Funes discovered the largest carnivorous dinosaur.

Fossils of a carnivorous animal, considerably larger than the well-known Tyrannosaurus Rex were found in Argentina.

Dinosaur Mapusaurus roseae weighed 6 tons and was averaging 12-13 meters in length. He lived 100 million years ago and preyed on large dinosaurs. The name Mapusaurus is derived from the word “Earth” in the language of the tribe Mapuche living near Nakhodka, in Western Patagonia.

“This lizard was large enough and strong enough to attack the 100-ton, 40-metre long herbivorous argentinosaurus ( Argentinosaurus ), who lived near him here, during the Cretaceous period,” explained Carrie. Continue reading

Fish from the Baltic sea is dangerous for children and pregnant women

Eating fish from some marine bays and rivers of Russia is dangerous for health, because fish accumulate pollutants and toxic substances, said experts at a media conference in RIA Novosti on Wednesday.

“I wouldn’t eat fish caught in the Gulf of Finland, in the Taganrog Bay and very close to Vladivostok,” – said senior researcher of the Institute of Oceanology. P. p. Shirshov of RAS Vasily Spiridonov.

As for rivers, the most polluted rivers of the Azov-black sea basin, warned the scientist. In addition, dangerous fish caught in the Moscow river.

At the same time in most of our seas, according to Spiridonova, the situation quite well.

However, as noted by the expert of WWF, the fisheries oeconomica Alexander Moiseev, “fish from the Baltic sea in Sweden is not recommended to eat pregnant women and children.” Continue reading

Breeding fish in the pond
Well maintained pond in a country house or summer cottage is undoubtedly the pride of the owner. First, the owner of all of these admires, gets moral satisfaction, but there…

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Breeding fish in an artificial pond
Nothing livens up an artificial pond, floating like a bright fish. In addition to aesthetic pleasure from the contemplation of them, communicating with them and feeding the fish bring practical…

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