The Barracuda is very similar to the pike, however, a large Barracuda (Sphyraenidae) and is called a sea pike for her appearance and hunting habits. It is the same long, agile and voracious freshwater predator. Its a bird elongated snout armed with powerful teeth, and front – clico prominent.
These fearsome marine predators are kept in small flocks. Dark back and light belly helps them to blend well even without shelter. Waiting for prey, they often hang at the edge of the coral reef. Hiding, almost not moving, only slightly moving his caudal and ventral fins. Approached the flock of fish barracudas will attack with lightning speed. Each predator chooses only one victim, not paying attention to the others. You can often watch from the water after the fish jump out of the sea pike. After a quick meal of Barracuda once again take a wait.
Barracudas belong to the order of kefalovrisia. Can reach lengths up to 3 m, but usually their size does not exceed 1 m Rod one – barracudas (Sphyraena). There are about 20 species in tropical and subtropical waters of the World ocean. In the Russian seas meet representatives of the two species. Continue reading
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
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
Aquarium fish are the same as Pets, such as cats and dogs, so they also require proper care. But how to choose the most affordable care. Because aquarium fish for beginners has to bring the joy of observing the underwater world, and not make all the time to spend cleaning your aquarium.
Care for aquarium fish
Let’s start with the fact that the shape of the aquarium doesn’t impact fish, but the size is important because in a small space a large fish or a large number of inhabitants will be crowded. In a small bowl very closely to live moving fish. It would also be hard to contain fish, which can then grow in size. Moreover, in a small bowl faster water begins to deteriorate, begin to appear different diseases that can lead to the death of Pets. The larger the aquarium the better. After purchasing the aquarium, do not hurry to run it in the fish. To begin, fill it with water, pebbles, shells and wait about two weeks. Check the condition of the water in the aquarium, be sure to filter it. Continue reading
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