The immeasurable diversity of nature on our planet: scientists consider to 3500 species of mammals and more than 850 000 species of insects. Despite the fact that already for many centuries is explored flora and fauna, and annually published reports of discoveries of new species, which find even in long inhabited and explored areas. So, in the early 30-ies of our century was known to 800 thousand species of butterflies, and by 1942 he already 900 thousand species. Even less studied is the life in the oceans, which often make sensational discoveries.
The existence in the seas and oceans are dangerous animals the people knew even in ancient times, although along with very real views were widespread tales of fantastic sea monsters. It was known about the danger of injections of some animals, on the toxicity of some marine animals by eating them for food and, of course, about large aggressive fish – the shark. Currently published a lot of papers devoted to the description of poisoning from the ingestion of marine animals in different parts of the World ocean. So, only in 50-ies of our century from such poisoning suffered tysjacheletij. According to the researchers, only poisonous fish there are about 500 species, most of which live in the salty waters.
By climatic and geographical basis distinguish polar, Northern, temperate, subtropical and tropical zones. The majority of our population lives in Northern and moderate climatic zones and therefore are not familiar with the fauna and flora of the tropics. Year-round abundance of warmth in them contributes to the rapid development of wildlife. So, in the Amazon region, has about 15 thousand different species of animals. Continue reading
In Crimea there are favorable conditions for development of pond fish farming. The article says about his condition today: the number of reservoirs, production of fish and etc. And also about future plans, including the establishment of enterprises for processing of fish. Describes a new form of semi-intensive fish-breeding, which crossed the farms of the Crimea. The ways of extension of deadlines fresh fish.
THE PRODUCTION, POND FISH, AND ITS DEVELOPMENT PROSPECTS IN THE AUTONOMOUS REPUBLIC OF CRIMEA
The development of pond aquaculture is the main area in fish farming to ensure sufficient number of quality fish products.
It is known that all water bodies in which there uvodna (local) or the universe ichthyofauna, fisheries are objects. Water features are one of the natural bases of the economic development of the fisheries complex of the autonomy that performs its task in providing a complete nutritional products that promote his employment, has recreational value. In Crimea for keeping pond fish farming (breeding, pond fish production, recreational and sport fisheries) used 340 water bodies total water poverhnosti ha. Continue reading
Goldfish Scientific classification Kingdom: Animals Type: Chordata Class: Bony fish Order: Cypriniformes Family: Cyprinids Origin: Goldfish Species: Carassius auratus subspecies of the goldfish Latin name Carassius auratus auratus (Linnaeus, 1758) wikispecies: Wikispecies Taxonomy on the
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ITIS NCBI 163350 145527 goldfish (lat. Carssius auratus auratus) subspecies of the freshwater fish of the genus carp. One of the first domesticated and one of the most popular aquarium fish. Contents [remove] 1 Etymology 2 origin 3 Description 4 3.1 Color terms of maintenance and reproduction 4.1 Feeding 4.2 Reproduction 5 In the aquarium and pond farm 6 Cm. also 7 Literature 8 notes 9 References Etymology
The name “Golden fish” due to the first major mutation in coloring that domesticated aquatic pet red-Golden color, and the best of which was worth its weight in gold. Origin story
The ancestor of the goldfish is goldfish. First domesticated in China, then been bred several different breeds of goldfish, which vary in size, body shape and eyes, as well as the color. Continue reading