Breeding fish in artificial reservoirs
Such fish as carp and tench in the main lead independent lives and inhabit deep waters, in stagnant water, away from other fish. White and motley silver carp are quite…

Continue reading →

Kuban som
Almost all the rivers of the Kuban. both in small and in large estuaries inhabited by the biggest fish of the Kuban - Kuban soma ( impressive weight about one…

Continue reading →

Amazon com the Arkhangelsk province
Fishermen in the Arkhangelsk region took out a strange catch in the area of ferry crossing Bereznik and aspen: they pulled from the water an unusual fish with the head…

Continue reading →

change

How do you sleep aquarium fish?

Watching fish in an aquarium, you’d think they never rest or sleep. In the understanding of man, they are in constant motion. However, like all animals, fish periods of active behavior alternate with phases of slowing of physical functions – this is the dream fish.

Dream fish is different from our understanding of sleep. Structural features and habitat not allow the fish to fall into a state in which they would be completely disconnected from reality. In such a state is immersed most mammals during sleep. The fish also during sleep, the brain activity remains unchanged, – they are not able to fall into a state of deep sleep.

This feature and may cause the issue: how do aquarium fish sleep?

Studying the behavior of aquarium fish, you will notice that at certain times the fish are almost motionless, transfixed in the water. This is the sleeping fish. During sleep, the fish usually drift without active movement. But the slightest influence of external factors leads fish into an active state. Continue reading

The inhabitant of sea depths told the researchers about the secrets of immortality

The tiny freshwater polyp Hydra long been of great interest to scientists. In many respects it is connected with the fact that this animal is actually immortal and shows no signs of aging.

From a biological point of view, an unusual phenomenon is explained by the fact that Hydra reproduce by budding and possess impressive abilities to regenerate all areas of the body due to the presence of a large number of stem cells. With age, the number of “miraculous” cells is not reduced, and they continue to renew the tissues of the body.

German researchers from the University named after Christian Albrecht (Christian-Albrechts-Universität zu Kiel) decided to find out what are the genetic basis of immortality of Hydra, and was surprised to find that the secret lies in the gene FoxO.

It is well known to geneticists, as there is in all animals and humans. Biologists have also proven that it is associated with aging. However, its role still remained unclear. Continue reading

The denizens of the deep

15. Lionfish
Fish-LiveDrive our rating of the most unusual inhabitants of the deep and dangerous at the same time, amazing lionfish, also known as striped lionfish, or Zebra fish. This lovely creation is long about 30 inches most of the time among the corals in a stationary state, and only from time to time, swims from one place to another. Thanks to the beautiful and unusual color, and long fan-like pectoral and dorsal fins of this fish attracts attention, both people and marine life.

However, for beauty of coloring and shape of her fin and hidden sharp poisonous needles, which it protects itself from enemies. The lionfish does not attack first, but if a person accidentally touches it or steps on it, from one injection that needle he has dramatically worse health. If there will be several injections, the person will need outside help, to swim to shore, because the pain can become unbearable and lead to loss of consciousness. Continue reading

The species of fish.
Since the fish bred in aquariums generations, there was a clear tendency to choose the most colorful animals for breeding. So many of the most popular tropical aquarium fish kept…

...

How fish breathes?
Hundreds of thousands of years ago, long before the appearance on Earth of man, the oceans already swam fish. At that time they were the most highly developed creatures. Since…

...