Illumination of the aquatic environment to a large extent determines the motor and nutritional activity of fish, and color vision is used by them to recognize aquatic and plant organisms by their color. In some fish, color vision serves to reflexively change color for protective purposes.
Daily changes in the intensity of illumination are the cause of daily vertical migrations of fish. For each fish species, there is a certain limit to solar radiation, above which the conditions for them become unfavorable, and then they sink to a depth or take shelter in shaded places and stop eating. This is confirmed by the behavior of fish in cloudy weather – they remain active throughout the daylight hours. By the way, invertebrates, crustaceans, leading a bottom or bottom lifestyle, do not tolerate direct sunlight. Continue reading
How to catch winter crucian on a shallow career
Catching crucian carp in winter is very entertaining, but requires great patience.
Fishing is all the more interesting because there are a lot of quarries around modern cities. For example, peat shallow careers. These bodies of water usually have a flat bottom, covered with a layer of bottom sludge. There crucian wintering, burying themselves in soft soil.
There is enough food in such a quarry for crucian carp, but in cold water, if there is deep silt at the bottom, the fish completely loses activity. Any need for food for crucian carp in a peat quarry disappears in the fall. Continue reading
The ide belongs to the Karpov family. In Russia, it is distributed mainly in the middle lane of the European part and in Siberia right up to the Kolyma. It inhabits the tributaries of rivers, streams, streams, eriks, flowing lakes and even deep streams.
Slow-moving ides have almost the entire body of golden color. The average weight of the fish is 1.5-2 kg, but there are specimens and 3-4 times larger. The ide is especially beautiful in the spring in a wedding dress, cast with a metallic sheen with gold highlights.
It becomes sexually mature in 4-5 years, as a rule, it depends on the characteristics of the reservoir and its food supply. Spawns rather early, right after the pike, at a water temperature of 6-8 °. According to popular beliefs, spawning begins at a time when the first leaves bloom on a birch. Continue reading