Origin
It is found almost in all lowland waters and lakes, in some countries even in Mountain Lakes (in Europe),from the north of the Pyrenees, the Alps and the Balkans to the Urals. Missing in Scotland, in Italy and Dalmatia are found local subspecies.
In Romania it occurs in the Danube, in all the lowland rivers, in all the ponds, ponds and ponds, in the dead arms of the rivers, in the reservoirs, irrigation channels, in the littoral Lakes, the Danube Delta and in the puddles of the Danube floodplain, etc.
Food Oblets
Fry (chicks of oblets) feed on rotatoria and infusoria, then on coarser plankton.
Mature specimens feed on filamentous algae, Phyto and zooplankton, insects fallen on the surface of the water; old specimens consume mainly zooplankton.
It also feeds on aquatic insects and their larvae. The life span of the fish is 5-7 years. The oblet has a tasty flesh, appreciated by consumers.
Features Oblets
The body is elongated and much compressed laterally. The scales, thin, easily come off the body of the fish. The small head is also compressed laterally. The muzzle is short, the mouth small, oblique upwards. Dorsal is developed, caudal deeply hollow, with equal lobes.
The dorsal oblet is green, with strong iridescence, the sides are silvery, with a strong shimmer. The abdomen is silvery-white. The dorsal and caudal fins are grey with darker edges, and the rest of the fins are colorless, acquiring Red reflexes during the breeding season.
The oblet is usually 12-18 cm long and weighs 35-45 g. it reaches the length of 22 cm and 50 g respectively.its growth rate is slow, the oblet being a small fish. Females grow faster than males. Specimens of 22-25 cm are rare.
The oblet is a lively fish that lives in shoals, splitting in groups the mirror of the water during swimming. This happens especially when attacked by the avatar, in which case it runs away with great speed, at such moments the large bank can be observed from a distance furrowing the surface.
It lives in lowland fresh and flowing waters and hilly areas, but is also found in brackish waters. It is absent from small ponds, heavily invaded by vegetation.
It is also present in some small rivers, where it sometimes goes up to the springs, and in some lowland waters it is the dominant species. It lives mostly close to the surface of the water, but in search of food it also frequents areas on the bottom of lakes, ponds.
From the scales of the oblet are extracted crystals of guanine (through a rather complicated technological process), material that is used to dye artificial pearls and handicrafts (in commercial language, it is called "essence d'orient").
Reproduction Oblets
Most specimens reach sexual maturity at 2 years, but males sometimes at 1 year.
Between April and June, females lay eggs in several portions (3-6, more often in 3-4 portions), in a season, a female lays a total of 1000-12000 eggs, with a diameter of 1.2-1.5 mm.
