In recent decades all over the world especially urgent became the problem of biological invasions, which are defined as all cases of penetration of living organisms into ecosystems situated beyond the original normal distribution. Invasive species are called invasive species or alien species can affect populations, species and communities of aboriginal and Ichtiofauna Flor, sacaste leading to irreversible changes in ecosystems.
The contamination of water bodies and fish farms unexpected species for the Balkhash-ili basin is also very important. Work on acclimatization of new fish species and the impact of faunal assemblages on the results of acclimatization are summarized in the summary of the “Fishes of Kazakhstan”, /1/. At this time, as a result of purposeful and unintentional introductions of fish fauna composition of the basin has more than tripled and now consists of 42 species /2/.
The results of the introduction of herbivorous fish in ponds and pond fish farms of the former Soviet republics led to a massive undesirable replenishment of local fish fauna low-value, non-target species of fish of the Chinese complex. The study of problems related to the spread of weed fish in water bodies of Kazakhstan, were held sporadically for more than 20 years ago /3,4,5,6,7/, but these studies have not been completed.
The aim of this work is vietnamesechristian, species and quantitative composition unplanned of invasive species in fish farms Balkhash basin.
MATERIALS AND METHODS
Materials for studies were collected from the following households:
1. Almaty pond farm is located on the river Ashybulak, the basin of Kaskelen. The farm has been breeding and commercial cultivation of common carp ( Cyprinus carpio ) in polyculture with phytovorous fish – white fish ( Hypophtalmihtix molitrix ), white Amur ( Ctenopharyngidon idella ).
2. Chilik pond farm is located on the bed of Lavar and R. Jars. This farm is also engaged in the breeding and rearing of carp in polyculture with herbivorous fish. At this time, the farm grows more valuable fish species: rainbow trout and paddlefish. Continue reading
Species of fish is actually a great many, but everything is easier if you divide them into two main classes: sea and river. This is a simple division we have laid the Foundation of this article. You will learn what are the fish of the sea and river (freshwater). But before that, a few words about why fish are divided that way. It’s in the water in which certain types of fish can live. Of course, there are families of fish, e.g., perch, cod, salmon, etc. but as you know, sea water is salty and river water and water in lakes is fresh: therefore, this classification of fishes is justified. Now let us dwell on some species of river fish that are most common in our waters.
What are the fish river
Among the river fish the most popular species are considered such as IDE, ruff, trout, carp, bream, sturgeon, burbot, tench, bleak, perch, pike, roach, carp, perch, catfish, sterlet, eel, Chub, silver bream and others. Now tell you more about some of these species.
This is one of the most common species found on the territory of Russia. IDE love deep watercourses — rivers, streams and creeks, if they are certainly deep enough. This is a very beautiful fish with silvery, shimmering gold scales and dark blue back. The fins usually have a reddish tint. IDE adult weighs usually more than a kilogram,and some copies and does weigh in 5-6, and even 7 kg. the spawning occurs in April and may large schools. Feeds on aquatic vegetation, and shellfish. Continue reading
The use of fish has long been proven, but not everyone knows that saltwater fish are much healthier. What exactly is the benefit of fish from the depths of the sea? This is the most effective natural activator of mental activity, because the meat of sea and ocean inhabitants contains much more fluorine and iodine than their freshwater brothers. Consider the features and benefits most popular fish .
A bit more about the benefits of fish. Marine fish contains a lot of amino acids – tryptophan, methionine, lysine. Their balance is excellent for a person. In the meat of marine animals contains a protein called taurine ,which perfectly regulates blood pressure and blood sugar levels
In the meat of oceanic fish species to accumulate large amounts of manganese, copper, zinc, boron and iron. While the present compounds of calcium and magnesium is important for prevention of osteoporosis. Regularly eating seafood will ensure that you have a balanced metabolism
In favor of fish from the seas and oceans says high content of fish oil, which is known to contain biologically active fatty acids, namely Omega 3 and Omega-6 and vitamins A ,D,E,F.
Also a plus oceanic fish species is that they are less susceptible to contamination by pesticides and radionuclides than are the inhabitants of freshwater reservoirs.
The benefits of fish. Which fish is healthier?
1. Mackerel. The most popular kinds of atleticheskaja. the Spanish mackerel and Indian mackerel. The mackerel is an interesting feature –the longer it is, the higher its fat content. At small fish (15-20 cm) it is 6% of body mass, in individuals up to 60 cm for about 20%. Besides the meat of mackerel contains about 24% easily digestible protein and vitamins D and B12.Tender and juicy meat contains fine bones and is an excellent choice for baking and sautéing. Smoking is not a very suitable option for adhering to a healthy lifestyle. In fried and cooked mackerel meat becomes too dry. Continue reading