The trout is a Predatory fish – Fish Sverdlovsk oblast – All about fishing – Fishing in the Sverdlovsk region
The trout belongs to the Salmon family (Salmonidae). Researchers believe that trout and char are the forms (subspecies) of trout (Salmo trutta), and lake Sevan and Amu Darya — independent species. As for rainbow trout, in the opinion of many scholars, this is a residential form of Steelhead salmon.
Brown trout (Salmo trutta m. lacustris) inhabits the lakes of the North-West of the country and the Caucasus. On spawning rises in most rivers and streams flowing into the lake, and sometimes remains in the reservoir. After spawning, the fry portion is rolled back into the lake, and some remains in the river, replenishing the population of brook trout.
Brown trout (Salmo trutta m. fario) is widely distributed in the European part of the USSR. Scholars acknowledge that the brook and brown trout is a very plastic form, easily passing from one to another. Brook trout is particularly popular among anglers (often referred to as char). Externally this is one of the most beautiful salmon. In the color of her body is covered with black and red spots, there are all colors of the rainbow. Continue reading
The illumination of the sea. In the Black sea there is a sparkling glow due to the outbreaks of small and microscopic marine organisms (nochesvetka, peritonei) and representing a single same color sparks. The intensity increases with excitement, the passage of a vessel, etc. Sparkling luminescence is usually observed in summer and autumn. It is particularly intense in the coastal zone.
Flowering sea due to the massive accumulation of planktonic (usually vegetable, but sometimes animals) organisms in surface water. At flowering significantly reduced water clarity and change its color; water becomes yellow, brown or reddish tint. In this area the algal blooms observed mainly in the northwestern part of the sea, as well as in gulfs and bays. It is possible throughout the year, but most likely from February to may.
Algae. In the Black sea is particularly prevalent red algae — Phyllophora that forms in the northwestern part of the sea at depths of 20-60 m huge bushes. From other algae it should be noted diatoms, perogitive, blue-green and brown. In the bays, estuaries, lagoons and bays at depths of usually not more than 10-12 meters often found in the Zostera, or sea grass. Continue reading
Species of piranha about eight, here are the main ones:
Slender piranha or “piranha-pike” . The body of this piranha torpedovidnoj. Eyes red. The top fish is a little darker than underparts; abdomen with a yellowish tinge. Around the gills there is a small dark spot, about the size of the fish’s eyes. The body of this piranha reaches up to 25 cm in aquarium conditions. All fins, except the tail grey, the anal fin is dark band. The caudal fin in adults is very dark.
Dwarf piranha . Length up to 15 cm Has a slightly elongated body, narrow head and big mouth. Dwarf piranha, covered with small shining scales. In General, the color gray, with dark currents on the body, anal fin is bright orange. The caudal fin is dark.
Miley krasnolesnyy or Milews-moon . One of the most beautiful representatives of herbivorous piranhas. In artificial conditions, it grows to 15 cm Has a slightly elongated body, a discoid shape. The eyes are large. The whole body is silver, there are many yellow-orange spots. Continue reading