In many countries a focus for freshwater and marine aquaculture is traditionally fish. In the balance of meat of our country’s fish production is 25%, it is used in more than 50 industries.
Production of food fish products has high economic efficiency. So, 70 million tonnes of fish, invertebrates and other water bodies (excluding whales) in protein content is equivalent to a herd of 400 million heads of cattle. The costs for producing 1 kg of fish protein is almost 3 times lower than the costs associated with obtaining 1 kg of meat protein products.
In addition to food production, the fishing industry provides raw materials for medical industry (fat, vitamins, medicines), food products (flour, minced fish, forage fish), fertilizer, leather, fur, ambergris, etc.
Feature fish as industrial raw materials Continue reading
Beauty is always fragile. Perhaps this may explain that the Queen of aquaria — gold fish — quite often sick. They can get as common to several species infection. and characteristic only for relatives. All diseases of aquarium goldfish can be divided into two groups: contagious and noncontagious.
The first group includes infectious and so-called invasive. The agents of the first group of diseases -mycobacteriosis, “rubella” carp, carp pox, columnaris or mouth rot, fin rot, become bacteria, fungi, viruses and unicellular algae. They mostly fall into the aquarium along with new infected fish that have not undergone quarantine. The danger is that all these ailments have a fairly long incubation period without external manifestations. Subsequently, the sources of infection are not only fish, but also algae. And even the ground. Conclusion: to prevent infection be sure to observe the 5-day quarantine in a separate tank for all beginners. Continue reading
Australian kishechnik has in common several names, and all of them are connected with the appearance of this marine life.
The English call it fish-pineapple because of coloring and body shape. Each of fairly large flakes fish has a yellow color with black outline, which is very like a pineapple rind.
Another name for the Australian kishechnika sounds like “fish knight”. It is due to the fact that each lamella has a spinous process, making the fish seem as if clad in armor like a knight. By the way, this “outfit” several prevents her to swim (aided by and large fins), but it’s a good idea to protect themselves from predators.
The first species was described in 1882 scientist De Vis. Today to meet kishechnika in the coastal waters of Western and Eastern Australia. Typically inhabits estuaries and coastal bays to a depth of 5 to 25 meters, where there are rocky debris and coral reefs. However, sometimes they get caught in fishing nets trawls that sweep the ocean at a depth of 250 meters.Colorful kishechnike Continue reading