Sea perch (lat. Sander marinus), Bernie (Azerbaijan), perch (Turkmenistan), Bukovec (the Dnieper — — pest Liman )is a variety of ray-finned fish of the perch family(Percidae)
. Visually, the sea perch is extremely somewhat different from its common relative. The body is painted in a light grey shade, on sides well significant transverse dark bands.
General summary fish perch usual is true for the sea bass. The only distinction in size. Although the body length is fairly considerable (50-60 centimeters), body weight generally does not surpass 2 kg. All because the torso he has an extremely extended as well as squashed side to side. On the jaws there are additionally klinovidnye teeth, yet not as excellent as that of the usual perch.
In the dorsal fin of not greater than 18 branched rays. The temple is larger than transverse size of eye.
The spines of the anal fin weak, and very closely adjacent to the pulps (unlike the pike perch, lucioperca L., and also bersh, L. volgensis), cheeks almost nude or nude.
Has fangs( unlike L. volgensis). Side line 75-88.
In Russia, pike — — perch, lucioperca L., and also bersh, L. volgensis. Especially close American Sanders — — L. canadensis as well as L. vitrea.
There are 2 isolated habitat of this varieties, which offers us, in fact, two separate populations. The first populace lives in the northwestern part of the Black sea, where an autumn in such big rivers as the Dnieper, southerly insect, Dniester and also Danube. The perches do not like to go to freshwater tidewaters, and also are long-term citizens. Sometimes they also swim straight right into the mouths of the rivers.
The second populace lives in the Caspian sea. Regional specimens have some minor differences in appearance from the black sea. Furthermore, the Caspians as a matter of fact, they avoid to show up in the desalinated parts of the sea, for instance, near the Volga Delta.
Center and also South Caspian sea from Makhachkala to Pahlavi in the West and from Mangyshlak to the island of Caspian sea in the East. Many sea perch in the West from Sumgait to And the old as well as the Islands Residential, Artem, Kura stone and also Baku island chain and also off the Eastern shore of the Caspian sea from Karabogaz-goals to the Krasnovodsk Gulf. In the Black sea it lives in the Dnieper-bug tidewater.
Sea perch, located in the Caspian sea, stays in the sea. It is not consisted of in the river as well as avoids the desalinated locations. From the Dnieper-bug tidewater system enters the mouth of the Dnieper and bug.
Caspian sea perch darker the black sea « bukovca ». It creates herds, associated with the facilities of reproduction (O. Residential, Kura stone, off the coastline of Turkmenistan and also Mangyshlak). Fish these herds are a little different ratios of the parts of the head and also dimensions of the fins.
Lives near all-time low on dense soils in the coastal zone, generally at midsts of’ as much as 35 m, seldom 100 m.
The spawning of the Caspian sea perch happens in April-may at a depth of from 3 to 12 m, on rocky areas. The peak of generating at water temperature levels of 15-16 °. Fertility 13-126 thousand, approximately 45 thousand eggs (fish size 26-47 cm).
The sticky eggs, larger than those of walleye. In September young of the year reach the typical size of 9.3 cm and also weight of 15 g.
Sea perch reaches the Black sea length (abs.) 54 centimeters, in the Caspian — — 62 centimeters In catches dominated by fish aged three to five years, their size 26-35 cm, weight 340-800 g.
Females grow faster than males. Spawning is at the age of 3 to 4 years from the few at the age of two years.
Sea perch eats gobies, sardines, atitinkamai, young herring, crayfish, shrimp.
Competitors. Partially sturgeon as well as seal.
Opponents. Gobies consuming eggs sea bass.
In Northern Azerbaijan as well as the Eastern shore of the Caspian sea migration the sea perch mostly approaches it in a seaside area in March — — may for spawning(generally when the water temperature 11-16 °) and September — — December for fattening. In winter, when air conditioning of the seaside waters, as well as in the summer when solid heating, a big portion of sea bass, moving far from the shore.
In Azerbaijan usually, a large number of its remains off the coastline. When ripe the sex-related items to stages IV and also IV-V sea perch approaching to the shore, where the initial rests on the sandy as well as Shelly premises, and after that for generating mosts likely to rocky ridges.
During the resort from the technique or the shore to them is going to break in midsts of 20-50 m. Winter a variety of sea perch holds among the rocks, part of the fish is kept in isolation, encompassing depths of 100 m On the Eastern coast of the Caspian sea is weakly noticable summer (July — — August )the South, the lake to Caspian sea. Wineservice sea perch does not fit in the autumn to the coast, as well as moves to the South (at midsts of 16-100 m), reaching Iran. Springtime is concentrated off the coast of South Azerbaijan. Juveniles from the age of 2 migrated with Mature.
The worth of tiny. The catch in the Caspian sea in 1936-1942 he averaged regarding 25 thousand centners a year, including in Azerbaijan from 5 to 15.2 thousand C, in Turkmenistan from 4.7 to 17.8 thousand kg. In the Black sea (the Dnieper-bug tidewater) sea perch is extremely tiny. Catches in the Caspian sea can be slightly raised.
Strategy and also the course of the fishery. Capture sea bass all year round (main gear springtime and also autumn) set web « mousetrap », skepasti, fixed and also, hardly ever, a zakidnogo Seine webs (in the spring).
Usage. The majority of the catch is salted. Part of it is frozen or marketed in chilled kind. A percentage is used for manufacturing of tinned items (« pike-perch in tomato sauce»»).