Com habits and lifestyle
This fish has several advantages: feels equally well in fresh and in salt water, fast growing, easily propagated, surviving in a crowded pond and can tolerate temporary decline of oxygen to 1 mg per liter. Everything else in the tenderness and taste of its meat is not inferior to the trout.
It is not surprising that channel catfish at home in the USA is one of the most popular fish for rearing in fish farms, where he was nicknamed “catfish” because of eight long whiskers, giving the resemblance of his face with cat. The body of the catfish is smooth, but there are strong and pungent rays in the dorsal and pectoral fins, which should beware – because all cats scratch.
Channel catfish usually reach maturity at 3-4-th year of life, reaching a mass of over 1 kg. the Main condition to start spawning is to increase the temperature to 25-30°. Working fecundity of females is 10 thousand eggs. To obtain 5 thousand fingerlings is sufficient to have two pairs of producers. Half the catfish are not difficult to identify. Males are always larger than females of the same age, and their skin color is noticeably darker. The head is more broad, massive, with well-marked muscular tubercles. Another distinctive feature is the protrusion of dense tissue in the anus – urogenitalnaya. Females before spawning the soft abdomen, genital region rounded, slightly reddened.
Breeding channel catfish
To produce offspring from a pair of sexually Mature channel catfish in the pond-spawning as a “socket” is often used milk jug, lowering it so the bottom was facing the dam. To the handle of a milk can tie a rope, the other end of which is fixed on the shore. Depth in the place of immersion of the cans should be at least 1 m.
Male drives into the nest the female, where it spawns. The ROE is attached to the inner walls of the can and grows from 5 (28-30°C) up to 10 (21 -24°C) days. To find out whether there was a spawning, it is possible, gently lifting the cans by a rope to the water surface. Incubation and “education” of the hatched larvae takes over the male. He is constantly in the churn, protects the eggs and enriches it with oxygen, creating over it a water current with their fins. When the larvae will be, they’re still quite a long time hiding in the nest. Under favorable circumstances from one pair of catfish can get up to 5 thousand podkrashennym two-week larvae.
In this age of the larvae may be caught and transplanted from spawning in the larger pond where they have more prospects for growth and larger and more abundant forage base. Some of them can be left in the spawning grounds (about a thousand pieces), where they are in the first year is also not crowded.
From this period the larvae should be fed. It can be nauplii of copepods grown Artemia or Daphnia. A very convenient starting food for fry marks DDM-5. After 45 days the weight of the fry will reach the weight of 1 g and grow them it will be possible with fry of other fish. By late summer channel catfish will weigh 20-30 g.
In Russia, channel catfish known since 1974, when he was brought for settlement of exchange water of thermal power plants. This fish feels good at a temperature of 25-30°C, but capable, and the long winter, if the temperature of the ice does not drop below 0.5 deg. Channel catfish fingerlings can be grown in your pond, but more profitable, of course, to acquire a young Godovikov in fish farms in thermal power plants. Then by the end of summer in your pond to get the fish in a pound. But if you have it spend the winter, at the end of the third year of the catfish is gaining weight more than one kilogram. The stocking density of fingerlings in the pond of 0.1 ha to 2 thousand pieces, dvuhletki – 100 pieces, trehletki – 70 pieces.
Food of the channel catfish
Channel catfish quickly becomes accustomed to artificial food, and the fry eat from the feeders, but fish older can pick it up and from the bottom. In feed should be enough food of animal origin where the protein is 30-40%. For channel catfish there are special brands of feed (To-111 -9/6, AK-LSS), but is also suitable forage for sturgeon and trout. In the absence of special feeds you can make them yourself. Composition in %: fish meal – 15-20, wheat – 20-50, meal sunflower – 10-25, yeast – 2-5, phosphatides -1-3. Thus, when the content in the feed is about 35% protein, about the same carbs and about 5% fat. It should be borne in mind that in the winter months the fish should be fed about once every three days.
As the object for growing channel catfish just feels better, of course, in warm water. If, for example, your site is located on the shore of the pond ice-free, it makes sense to grow it in the net cages. Another option, when along the border of the plot passes the drainage channel. Encircling a portion of it (for example, the width of the plot) grid, you can run a dozen different fish Godovikov. Eating tadpoles, mosquito larvae, beetles, dragonflies, catfish can grow by the end of summer to 300-500 g.
By the way, you can keep several catfish and in the winter, if it is possible to overdo them in a 200-litre barrel or large tub in a cool room at a temperature of water +5- +10°.
A very promising channel catfish for the South of Russia, he feels great all year round, not only in fresh but also in waters where the salinity reaches up to 21 % of salt per liter of water.